diff --git a/.appveyor.yml b/.appveyor.yml
index 9c6bedee3..3183c3d1b 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -13,7 +13,8 @@ environment:
   TEST_OPTIONS:
   DEPLOY: YES
   matrix:
-  - PYTHON: C:\Python38rc1-x64
+  - PYTHON: C:/Python38
+  - PYTHON: C:/Python38-x64
   - PYTHON: C:/Python37
   - PYTHON: C:/Python37-x64
   - PYTHON: C:/Python36
@@ -32,11 +33,6 @@ environment:
 
 
 install:
-- ps: |
-      if ($env:PYTHON -eq "C:\Python38rc1-x64") {
-        curl -o install_python.ps1 https://raw.githubusercontent.com/matthew-brett/multibuild/d0cf77e62028704875073e3dc4626f61d1c33b0e/install_python.ps1
-        .\install_python.ps1
-      }
 - curl -fsSL -o pillow-depends.zip https://github.com/python-pillow/pillow-depends/archive/master.zip
 - 7z x pillow-depends.zip -oc:\
 - mv c:\pillow-depends-master c:\pillow-depends
@@ -80,6 +76,7 @@ build_script:
 test_script:
 - cd c:\pillow
 - '%PYTHON%\%PIP_DIR%\pip.exe install pytest pytest-cov'
+- c:\"Program Files (x86)"\"Windows Kits"\10\Debuggers\x86\gflags.exe /p /enable %PYTHON%\%EXECUTABLE%
 - '%PYTHON%\%EXECUTABLE% -m pytest -vx --cov PIL --cov-report term --cov-report xml Tests'
 #- '%PYTHON%\%EXECUTABLE% test-installed.py -v -s %TEST_OPTIONS%' TODO TEST_OPTIONS with pytest?
 
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index f72342c5c..195ea3865 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.7"]
+        python-version: ["3.8"]
 
     name: Python ${{ matrix.python-version }}
 
diff --git a/.github/workflows/test-windows.yml b/.github/workflows/test-windows.yml
index 0e368a7c6..50aff6bfe 100644
--- a/.github/workflows/test-windows.yml
+++ b/.github/workflows/test-windows.yml
@@ -5,11 +5,11 @@ on: [push, pull_request]
 jobs:
   build:
 
-    runs-on: windows-2016
+    runs-on: windows-2019
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.5", "3.6", "3.7", "pypy3.6"]
+        python-version: ["3.5", "3.6", "3.7"]
         architecture: ["x86", "x64"]
         include:
           - architecture: "x86"
@@ -43,6 +43,7 @@ jobs:
         Write-Host "::set-env name=pythonLocation::$env:PYTHON" # new syntax https://github.com/actions/toolkit/blob/5bb77ec03fea98332e41f9347c8fbb1ce1e48f4a/docs/commands.md
         New-Item -ItemType SymbolicLink -Path "$env:PYTHON\python.exe" -Target "$env:PYTHON\pypy3.exe"
         curl -fsSL -o get-pip.py https://bootstrap.pypa.io/get-pip.py
+        $env:PATH = "$env:PYTHON\bin;$env:PATH"
         & $env:PYTHON\python.exe get-pip.py
       shell: pwsh
 
@@ -67,6 +68,12 @@ jobs:
         Write-Host "`#`#[add-path]$env:RUNNER_WORKSPACE\nasm-2.14.02"
         Write-Host "::add-path::$env:RUNNER_WORKSPACE\nasm-2.14.02"
 
+        # 32-bit should work on both platforms
+        curl -fsSL -o gs950.exe https://github.com/ArtifexSoftware/ghostpdl-downloads/releases/download/gs950/gs950w32.exe
+        ./gs950.exe /S
+        Write-Host "`#`#[add-path]C:\Program Files (x86)\gs\gs9.50\bin"
+        Write-Host "::add-path::C:\Program Files (x86)\gs\gs9.50\bin"
+
         $env:PYTHON=$env:pythonLocation
         curl -fsSL -o pillow-depends.zip https://github.com/python-pillow/pillow-depends/archive/master.zip
         7z x pillow-depends.zip -oc:\
@@ -89,7 +96,7 @@ jobs:
         set INCLIB=%GITHUB_WORKSPACE%\winbuild\depends\msvcr10-x32
         set BUILD=%GITHUB_WORKSPACE%\winbuild\build
         cd /D %BUILD%\jpeg-9c
-        call "C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall.bat" ${{ matrix.platform-vcvars }} 8.1
+        call "C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Auxiliary\Build\vcvarsall.bat" ${{ matrix.platform-vcvars }}
         echo on
         nmake -nologo -f makefile.vc setup-vc6
         nmake -nologo -f makefile.vc clean
@@ -105,7 +112,7 @@ jobs:
         set INCLIB=%GITHUB_WORKSPACE%\winbuild\depends\msvcr10-x32
         set BUILD=%GITHUB_WORKSPACE%\winbuild\build
         cd /D %BUILD%\libjpeg-turbo-2.0.3
-        call "C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall.bat" ${{ matrix.platform-vcvars }} 8.1
+        call "C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Auxiliary\Build\vcvarsall.bat" ${{ matrix.platform-vcvars }}
         echo on
         set CMAKE=cmake.exe -DCMAKE_VERBOSE_MAKEFILE=ON -DCMAKE_RULE_MESSAGES:BOOL=OFF
         set CMAKE=%CMAKE% -DENABLE_SHARED:BOOL=OFF -DWITH_JPEG8:BOOL=TRUE -DWITH_CRT_DLL:BOOL=TRUE -DCMAKE_BUILD_TYPE=Release
@@ -124,7 +131,7 @@ jobs:
         set INCLIB=%GITHUB_WORKSPACE%\winbuild\depends\msvcr10-x32
         set BUILD=%GITHUB_WORKSPACE%\winbuild\build
         cd /D %BUILD%\zlib-1.2.11
-        call "C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall.bat" ${{ matrix.platform-vcvars }} 8.1
+        call "C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Auxiliary\Build\vcvarsall.bat" ${{ matrix.platform-vcvars }}
         echo on
         nmake -nologo -f win32\Makefile.msc clean
         nmake -nologo -f win32\Makefile.msc zlib.lib
@@ -138,8 +145,8 @@ jobs:
         set INCLUDE=C:\Program Files (x86)\Microsoft SDKs\Windows\V7.1A\Include
         set INCLIB=%GITHUB_WORKSPACE%\winbuild\depends\msvcr10-x32
         set BUILD=%GITHUB_WORKSPACE%\winbuild\build
-        cd /D %BUILD%\tiff-4.0.10
-        call "C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall.bat" ${{ matrix.platform-vcvars }} 8.1
+        cd /D %BUILD%\tiff-4.1.0
+        call "C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Auxiliary\Build\vcvarsall.bat" ${{ matrix.platform-vcvars }}
         echo on
         copy %GITHUB_WORKSPACE%\winbuild\tiff.opt nmake.opt
         nmake -nologo -f makefile.vc clean
@@ -155,7 +162,7 @@ jobs:
         set INCLIB=%GITHUB_WORKSPACE%\winbuild\depends\msvcr10-x32
         set BUILD=%GITHUB_WORKSPACE%\winbuild\build
         cd /D %BUILD%\libwebp-1.0.3
-        call "C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall.bat" ${{ matrix.platform-vcvars }} 8.1
+        call "C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Auxiliary\Build\vcvarsall.bat" ${{ matrix.platform-vcvars }}
         echo on
         rmdir /S /Q output\release-static
         nmake -nologo -f Makefile.vc CFG=release-static OBJDIR=output ARCH=${{ matrix.architecture }} all
@@ -172,12 +179,12 @@ jobs:
         set INCLIB=%GITHUB_WORKSPACE%\winbuild\depends\msvcr10-x32
         set BUILD=%GITHUB_WORKSPACE%\winbuild\build
         cd /D %BUILD%\freetype-2.10.1
-        call "C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall.bat" ${{ matrix.platform-vcvars }} 8.1
+        call "C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Auxiliary\Build\vcvarsall.bat" ${{ matrix.platform-vcvars }}
         echo on
         rmdir /S /Q objs
-        set DefaultPlatformToolset=v140
-        set VCTargetsPath=C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\Common7\IDE\VC\VCTargets
-        set MSBUILD="C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\MSBuild\15.0\Bin\MSBuild.exe"
+        set DefaultPlatformToolset=v142
+        set VCTargetsPath=C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\MSBuild\Microsoft\VC\v160\
+        set MSBUILD="C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\MSBuild\Current\Bin\MSBuild.exe"
         powershell -Command "(gc builds\windows\vc2010\freetype.vcxproj) -replace 'MultiThreaded<', 'MultiThreadedDLL<' | Out-File -encoding ASCII builds\windows\vc2010\freetype.vcxproj"
         %MSBUILD% builds\windows\vc2010\freetype.sln /t:Build /p:Configuration="Release Static" /p:Platform=${{ matrix.platform-msbuild }} /m
         xcopy /Y /E /Q include %INCLIB%
@@ -190,13 +197,13 @@ jobs:
         set INCLIB=%GITHUB_WORKSPACE%\winbuild\depends\msvcr10-x32
         set BUILD=%GITHUB_WORKSPACE%\winbuild\build
         cd /D %BUILD%\lcms2-2.8
-        call "C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall.bat" ${{ matrix.platform-vcvars }} 8.1
+        call "C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Auxiliary\Build\vcvarsall.bat" ${{ matrix.platform-vcvars }}
         echo on
         rmdir /S /Q Lib
         rmdir /S /Q Projects\VC2015\Release
-        set VCTargetsPath=C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\Common7\IDE\VC\VCTargets
-        set MSBUILD="C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\MSBuild\15.0\Bin\MSBuild.exe"
-        powershell -Command "(gc Projects\VC2015\lcms2_static\lcms2_static.vcxproj) -replace 'MultiThreaded<', 'MultiThreadedDLL<' | Out-File -encoding ASCII Projects\VC2015\lcms2_static\lcms2_static.vcxproj"
+        set VCTargetsPath=C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\MSBuild\Microsoft\VC\v160\
+        set MSBUILD="C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\MSBuild\Current\Bin\MSBuild.exe"
+        powershell %GITHUB_WORKSPACE%\winbuild\lcms2_patch.ps1
         %MSBUILD% Projects\VC2015\lcms2.sln /t:Clean;lcms2_static /p:Configuration="Release" /p:Platform=${{ matrix.platform-msbuild }} /m
         xcopy /Y /E /Q include %INCLIB%
         copy /Y /B Lib\MS\*.lib %INCLIB%
@@ -208,7 +215,7 @@ jobs:
         set INCLIB=%GITHUB_WORKSPACE%\winbuild\depends\msvcr10-x32
         set BUILD=%GITHUB_WORKSPACE%\winbuild\build
         cd /D %BUILD%\openjpeg-2.3.1msvcr10-x32
-        call "C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall.bat" ${{ matrix.platform-vcvars }} 8.1
+        call "C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Auxiliary\Build\vcvarsall.bat" ${{ matrix.platform-vcvars }}
         echo on
         set CMAKE=cmake.exe -DCMAKE_VERBOSE_MAKEFILE=ON -DCMAKE_RULE_MESSAGES:BOOL=OFF
         set CMAKE=%CMAKE% -DBUILD_THIRDPARTY:BOOL=OFF -DBUILD_SHARED_LIBS:BOOL=OFF
@@ -230,7 +237,7 @@ jobs:
         set BUILD=%GITHUB_WORKSPACE%\winbuild\build
         rem ba653c8: Merge tag '2.12.5' into msvc
         cd /D %BUILD%\libimagequant-ba653c8ccb34dde4e21c6076d85a72d21ed9d971
-        call "C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall.bat" ${{ matrix.platform-vcvars }} 8.1
+        call "C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Auxiliary\Build\vcvarsall.bat" ${{ matrix.platform-vcvars }}
         echo on
         echo (gc CMakeLists.txt) -replace 'add_library', "add_compile_options(-openmp-)`r`nadd_library" ^| Out-File -encoding ASCII CMakeLists.txt > patch.ps1
         echo (gc CMakeLists.txt) -replace ' SHARED', ' STATIC' ^| Out-File -encoding ASCII CMakeLists.txt >> patch.ps1
@@ -254,7 +261,7 @@ jobs:
         set INCLUDE=%INCLUDE%;%INCLIB%
         set LIB=%LIB%;%INCLIB%
         cd /D %BUILD%\harfbuzz-2.6.1
-        call "C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall.bat" ${{ matrix.platform-vcvars }} 8.1
+        call "C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Auxiliary\Build\vcvarsall.bat" ${{ matrix.platform-vcvars }}
         echo on
         set CMAKE=cmake.exe -DCMAKE_VERBOSE_MAKEFILE=ON -DCMAKE_RULE_MESSAGES:BOOL=OFF
         set CMAKE=%CMAKE% -DHB_HAVE_FREETYPE:BOOL=ON -DCMAKE_BUILD_TYPE=Release
@@ -273,7 +280,7 @@ jobs:
         set INCLIB=%GITHUB_WORKSPACE%\winbuild\depends\msvcr10-x32
         set BUILD=%GITHUB_WORKSPACE%\winbuild\build
         cd /D %BUILD%\fribidi-1.0.7
-        call "C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall.bat" ${{ matrix.platform-vcvars }} 8.1
+        call "C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Auxiliary\Build\vcvarsall.bat" ${{ matrix.platform-vcvars }}
         echo on
         copy /Y /B %GITHUB_WORKSPACE%\winbuild\fribidi.cmake CMakeLists.txt
         set CMAKE=cmake.exe -DCMAKE_VERBOSE_MAKEFILE=ON -DCMAKE_RULE_MESSAGES:BOOL=OFF
@@ -295,7 +302,7 @@ jobs:
         set INCLUDE=%INCLUDE%;%INCLIB%
         set LIB=%LIB%;%INCLIB%
         cd /D %BUILD%\libraqm-0.7.0
-        call "C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall.bat" ${{ matrix.platform-vcvars }} 8.1
+        call "C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Auxiliary\Build\vcvarsall.bat" ${{ matrix.platform-vcvars }}
         echo on
         copy /Y /B %GITHUB_WORKSPACE%\winbuild\raqm.cmake CMakeLists.txt
         set CMAKE=cmake.exe -DCMAKE_VERBOSE_MAKEFILE=ON -DCMAKE_RULE_MESSAGES:BOOL=OFF
@@ -307,22 +314,6 @@ jobs:
         copy /Y /B libraqm.dll %INCLIB%
       shell: cmd
 
-    - name: Build dependencies / ghostscript
-      run: |
-        set INCLUDE=C:\Program Files (x86)\Microsoft SDKs\Windows\V7.1A\Include
-        set INCLIB=%GITHUB_WORKSPACE%\winbuild\depends\msvcr10-x32
-        set BUILD=%GITHUB_WORKSPACE%\winbuild\build
-        cd /D %BUILD%\ghostscript-9.27
-        call "C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall.bat" ${{ matrix.platform-vcvars }} 8.1
-        echo on
-        set MSVC_VERSION=14
-        set RCOMP="C:\Program Files (x86)\Microsoft SDKs\Windows\v7.1A\Bin\RC.Exe"
-        if "${{ matrix.architecture }}"=="x64" set WIN64=""
-        nmake -nologo -f psi\msvc.mak
-        rem Add bin to PATH variable: Copy to INCLIB, then add INCLIB to PATH in Test step.
-        copy /Y /B bin\* %INCLIB%
-      shell: cmd
-
     - name: Build Pillow
       run: |
         set PYTHON=%pythonLocation%
@@ -332,18 +323,27 @@ jobs:
         cd /D %GITHUB_WORKSPACE%
         set LIB=%INCLIB%;%PYTHON%\tcl
         set INCLUDE=%INCLIB%;%GITHUB_WORKSPACE%\depends\tcl86\include;%INCLUDE%
-        call "C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall.bat" ${{ matrix.platform-vcvars }} 8.1
+        call "C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Auxiliary\Build\vcvarsall.bat" ${{ matrix.platform-vcvars }}
+        set DISTUTILS_USE_SDK=1
+        set py_vcruntime_redist=true
         %PYTHON%\python.exe setup.py build_ext install
-        rem Add GhostScript and Raqm binaries (copied to INCLIB) to PATH.
+        rem Add libraqm.dll (copied to INCLIB) to PATH.
         path %INCLIB%;%PATH%
         %PYTHON%\python.exe selftest.py --installed
       shell: cmd
 
+    # failing with PyPy3
+    - name: Enable heap verification
+      if: "!contains(matrix.python-version, 'pypy')"
+      run: |
+        c:\"Program Files (x86)"\"Windows Kits"\10\Debuggers\x86\gflags.exe /p /enable %PYTHON%\python.exe
+      shell: cmd
+
     - name: Test Pillow
       run: |
         set PYTHON=%pythonLocation%
         set INCLIB=%GITHUB_WORKSPACE%\winbuild\depends\msvcr10-x32
-        rem Add GhostScript and Raqm binaries (copied to INCLIB) to PATH.
+        rem Add libraqm.dll (copied to INCLIB) to PATH.
         path %INCLIB%;%PATH%
         cd /D %GITHUB_WORKSPACE%
         %PYTHON%\python.exe -m pytest -vx --cov PIL --cov-report term --cov-report xml Tests
@@ -366,7 +366,7 @@ jobs:
         cd /D %GITHUB_WORKSPACE%
         set LIB=%INCLIB%;%PYTHON%\tcl
         set INCLUDE=%INCLIB%;%GITHUB_WORKSPACE%\depends\tcl86\include;%INCLUDE%
-        call "C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall.bat" ${{ matrix.platform-vcvars }} 8.1
+        call "C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Auxiliary\Build\vcvarsall.bat" ${{ matrix.platform-vcvars }}
         %PYTHON%\python.exe setup.py bdist_wheel
       shell: cmd
 
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index d6676ace7..cab5b642a 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -9,14 +9,15 @@ jobs:
       fail-fast: false
       matrix:
         os: [
-          "ubuntu-18.04",
-          "macOS-10.14",
+          "ubuntu-latest",
+          "macOS-latest",
         ]
         python-version: [
           "pypy3",
+          "3.8",
           "3.7",
-          "3.5",
           "3.6",
+          "3.5",
         ]
         include:
         - python-version: "3.5"
@@ -53,7 +54,7 @@ jobs:
         .travis/test.sh
 
     - name: Docs
-      if: matrix.python-version == 3.7
+      if: matrix.python-version == 3.8
       run: |
         pip install sphinx-rtd-theme
         make doccheck
diff --git a/CHANGES.rst b/CHANGES.rst
index 816e0a4f1..eb96600ed 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -5,6 +5,21 @@ Changelog (Pillow)
 7.0.0 (unreleased)
 ------------------
 
+- Fixed freeing unallocated pointer when resizing with height too large #4116
+  [radarhere]
+
+- Copy info in Image.transform #4128
+  [radarhere]
+
+- Corrected DdsImagePlugin setting info gamma #4171
+  [radarhere]
+
+- Depends: Update libtiff to 4.1.0 #4195
+  [radarhere]
+
+- Improve handling of file resources #3577
+  [jdufresne]
+
 - Removed CI testing of Fedora 29 #4165
   [hugovk]
 
diff --git a/Tests/conftest.py b/Tests/conftest.py
new file mode 100644
index 000000000..2b796148d
--- /dev/null
+++ b/Tests/conftest.py
@@ -0,0 +1,11 @@
+def pytest_report_header(config):
+    import io
+
+    try:
+        from PIL import features
+
+        with io.StringIO() as out:
+            features.pilinfo(out=out, supported_formats=False)
+            return out.getvalue()
+    except Exception as e:
+        return "pytest_report_header failed: %s" % str(e)
diff --git a/Tests/images/DXGI_FORMAT_BC7_UNORM_SRGB.dds b/Tests/images/DXGI_FORMAT_BC7_UNORM_SRGB.dds
new file mode 100644
index 000000000..9b4d8e21f
Binary files /dev/null and b/Tests/images/DXGI_FORMAT_BC7_UNORM_SRGB.dds differ
diff --git a/Tests/images/DXGI_FORMAT_BC7_UNORM_SRGB.png b/Tests/images/DXGI_FORMAT_BC7_UNORM_SRGB.png
new file mode 100644
index 000000000..57177fe2b
Binary files /dev/null and b/Tests/images/DXGI_FORMAT_BC7_UNORM_SRGB.png differ
diff --git a/Tests/test_file_dds.py b/Tests/test_file_dds.py
index 498c64f21..8ef90e86e 100644
--- a/Tests/test_file_dds.py
+++ b/Tests/test_file_dds.py
@@ -8,6 +8,7 @@ TEST_FILE_DXT1 = "Tests/images/dxt1-rgb-4bbp-noalpha_MipMaps-1.dds"
 TEST_FILE_DXT3 = "Tests/images/dxt3-argb-8bbp-explicitalpha_MipMaps-1.dds"
 TEST_FILE_DXT5 = "Tests/images/dxt5-argb-8bbp-interpolatedalpha_MipMaps-1.dds"
 TEST_FILE_DX10_BC7 = "Tests/images/bc7-argb-8bpp_MipMaps-1.dds"
+TEST_FILE_DX10_BC7_UNORM_SRGB = "Tests/images/DXGI_FORMAT_BC7_UNORM_SRGB.dds"
 TEST_FILE_UNCOMPRESSED_RGB = "Tests/images/uncompressed_rgb.dds"
 
 
@@ -69,6 +70,21 @@ class TestFileDds(PillowTestCase):
 
         self.assert_image_equal(target, im)
 
+    def test_dx10_bc7_unorm_srgb(self):
+        """Check DX10 unsigned normalized integer images can be opened"""
+
+        target = Image.open(TEST_FILE_DX10_BC7_UNORM_SRGB.replace(".dds", ".png"))
+
+        im = Image.open(TEST_FILE_DX10_BC7_UNORM_SRGB)
+        im.load()
+
+        self.assertEqual(im.format, "DDS")
+        self.assertEqual(im.mode, "RGBA")
+        self.assertEqual(im.size, (16, 16))
+        self.assertEqual(im.info["gamma"], 1 / 2.2)
+
+        self.assert_image_equal(target, im)
+
     def test_unimplemented_dxgi_format(self):
         self.assertRaises(
             NotImplementedError,
diff --git a/Tests/test_file_psd.py b/Tests/test_file_psd.py
index f57deff6a..939485f67 100644
--- a/Tests/test_file_psd.py
+++ b/Tests/test_file_psd.py
@@ -36,9 +36,8 @@ class TestImagePsd(PillowTestCase):
 
     def test_context_manager(self):
         def open():
-            im = Image.open(test_file)
-            im.load()
-            im.close()
+            with Image.open(test_file) as im:
+                im.load()
 
         self.assert_warning(None, open)
 
diff --git a/Tests/test_image_resample.py b/Tests/test_image_resample.py
index b831b3e4a..26c65d544 100644
--- a/Tests/test_image_resample.py
+++ b/Tests/test_image_resample.py
@@ -9,11 +9,15 @@ class TestImagingResampleVulnerability(PillowTestCase):
     # see https://github.com/python-pillow/Pillow/issues/1710
     def test_overflow(self):
         im = hopper("L")
-        xsize = 0x100000008 // 4
-        ysize = 1000  # unimportant
-        with self.assertRaises(MemoryError):
-            # any resampling filter will do here
-            im.im.resize((xsize, ysize), Image.BILINEAR)
+        size_too_large = 0x100000008 // 4
+        size_normal = 1000  # unimportant
+        for xsize, ysize in (
+            (size_too_large, size_normal),
+            (size_normal, size_too_large),
+        ):
+            with self.assertRaises(MemoryError):
+                # any resampling filter will do here
+                im.im.resize((xsize, ysize), Image.BILINEAR)
 
     def test_invalid_size(self):
         im = hopper()
diff --git a/Tests/test_image_transform.py b/Tests/test_image_transform.py
index e00a22a3d..35f64bcc9 100644
--- a/Tests/test_image_transform.py
+++ b/Tests/test_image_transform.py
@@ -1,14 +1,12 @@
 import math
 
-from PIL import Image
+from PIL import Image, ImageTransform
 
 from .helper import PillowTestCase, hopper
 
 
 class TestImageTransform(PillowTestCase):
     def test_sanity(self):
-        from PIL import ImageTransform
-
         im = Image.new("L", (100, 100))
 
         seq = tuple(range(10))
@@ -22,6 +20,16 @@ class TestImageTransform(PillowTestCase):
         transform = ImageTransform.MeshTransform([(seq[:4], seq[:8])])
         im.transform((100, 100), transform)
 
+    def test_info(self):
+        comment = b"File written by Adobe Photoshop\xa8 4.0"
+
+        im = Image.open("Tests/images/hopper.gif")
+        self.assertEqual(im.info["comment"], comment)
+
+        transform = ImageTransform.ExtentTransform((0, 0, 0, 0))
+        new_im = im.transform((100, 100), transform)
+        self.assertEqual(new_im.info["comment"], comment)
+
     def test_extent(self):
         im = hopper("RGB")
         (w, h) = im.size
diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index 38cf61f62..dd77f3278 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -2,7 +2,7 @@
 # Create and test a Python package on multiple Python versions.
 # Add steps that analyze code, save the dist with the build record,
 # publish to a PyPI-compatible index, and more:
-# https://docs.microsoft.com/azure/devops/pipelines/languages/python
+# https://docs.microsoft.com/azure/devops/pipelines/ecosystems/python
 
 jobs:
 
diff --git a/setup.py b/setup.py
index 029b80f03..f5024990f 100755
--- a/setup.py
+++ b/setup.py
@@ -19,11 +19,31 @@ from distutils.command.build_ext import build_ext
 
 from setuptools import Extension, setup
 
+
+def get_version():
+    version_file = "src/PIL/_version.py"
+    with open(version_file, "r") as f:
+        exec(compile(f.read(), version_file, "exec"))
+    return locals()["__version__"]
+
+
+NAME = "Pillow"
+PILLOW_VERSION = get_version()
+FREETYPE_ROOT = None
+IMAGEQUANT_ROOT = None
+JPEG2K_ROOT = None
+JPEG_ROOT = None
+LCMS_ROOT = None
+TIFF_ROOT = None
+ZLIB_ROOT = None
+
+
 if sys.platform == "win32" and sys.version_info >= (3, 9):
     warnings.warn(
-        "Pillow does not yet support Python {}.{} and does not yet provide "
-        "prebuilt Windows binaries. We do not recommend building from "
-        "source on Windows.".format(sys.version_info.major, sys.version_info.minor),
+        "Pillow {} does not support Python {}.{} and does not provide prebuilt "
+        "Windows binaries. We do not recommend building from source on Windows.".format(
+            PILLOW_VERSION, sys.version_info.major, sys.version_info.minor
+        ),
         RuntimeWarning,
     )
 
@@ -228,24 +248,6 @@ def _read(file):
         return fp.read()
 
 
-def get_version():
-    version_file = "src/PIL/_version.py"
-    with open(version_file, "r") as f:
-        exec(compile(f.read(), version_file, "exec"))
-    return locals()["__version__"]
-
-
-NAME = "Pillow"
-PILLOW_VERSION = get_version()
-JPEG_ROOT = None
-JPEG2K_ROOT = None
-ZLIB_ROOT = None
-IMAGEQUANT_ROOT = None
-TIFF_ROOT = None
-FREETYPE_ROOT = None
-LCMS_ROOT = None
-
-
 def _pkg_config(name):
     try:
         command = os.environ.get("PKG_CONFIG", "pkg-config")
@@ -854,7 +856,12 @@ try:
         license="HPND",
         author="Alex Clark (PIL Fork Author)",
         author_email="aclark@python-pillow.org",
-        url="http://python-pillow.org",
+        url="https://python-pillow.org",
+        project_urls={
+            "Documentation": "https://pillow.readthedocs.io",
+            "Source": "https://github.com/python-pillow/Pillow",
+            "Funding": "https://tidelift.com/subscription/pkg/pypi-pillow",
+        },
         classifiers=[
             "Development Status :: 6 - Mature",
             "License :: OSI Approved :: Historical Permission Notice and Disclaimer (HPND)",  # noqa: E501
diff --git a/src/PIL/DdsImagePlugin.py b/src/PIL/DdsImagePlugin.py
index 62e82e6e1..9ba6e0ff8 100644
--- a/src/PIL/DdsImagePlugin.py
+++ b/src/PIL/DdsImagePlugin.py
@@ -155,7 +155,7 @@ class DdsImageFile(ImageFile.ImageFile):
                     n = 7
                 elif dxgi_format == DXGI_FORMAT_BC7_UNORM_SRGB:
                     self.pixel_format = "BC7"
-                    self.im_info["gamma"] = 1 / 2.2
+                    self.info["gamma"] = 1 / 2.2
                     n = 7
                 else:
                     raise NotImplementedError(
diff --git a/src/PIL/Image.py b/src/PIL/Image.py
index 2d73d8f53..e7f720ced 100644
--- a/src/PIL/Image.py
+++ b/src/PIL/Image.py
@@ -2231,6 +2231,7 @@ class Image:
             raise ValueError("missing method data")
 
         im = new(self.mode, size, fillcolor)
+        im.info = self.info.copy()
         if method == MESH:
             # list of quads
             for box, quad in data:
diff --git a/src/PIL/TiffImagePlugin.py b/src/PIL/TiffImagePlugin.py
index 7d39ea88b..88dd2083d 100644
--- a/src/PIL/TiffImagePlugin.py
+++ b/src/PIL/TiffImagePlugin.py
@@ -298,25 +298,21 @@ class IFDRational(Rational):
         float/rational/other number, or an IFDRational
         :param denominator: Optional integer denominator
         """
-        self._denominator = denominator
-        self._numerator = value
-        self._val = float(1)
+        if isinstance(value, IFDRational):
+            self._numerator = value.numerator
+            self._denominator = value.denominator
+            self._val = value._val
+            return
 
         if isinstance(value, Fraction):
             self._numerator = value.numerator
             self._denominator = value.denominator
-            self._val = value
-
-        if isinstance(value, IFDRational):
-            self._denominator = value.denominator
-            self._numerator = value.numerator
-            self._val = value._val
-            return
+        else:
+            self._numerator = value
+            self._denominator = denominator
 
         if denominator == 0:
             self._val = float("nan")
-            return
-
         elif denominator == 1:
             self._val = Fraction(value)
         else:
diff --git a/src/libImaging/Resample.c b/src/libImaging/Resample.c
index 4a98e8477..d1a89e2ce 100644
--- a/src/libImaging/Resample.c
+++ b/src/libImaging/Resample.c
@@ -627,8 +627,6 @@ ImagingResampleInner(Imaging imIn, int xsize, int ysize,
     if ( ! ksize_vert) {
         free(bounds_horiz);
         free(kk_horiz);
-        free(bounds_vert);
-        free(kk_vert);
         return NULL;
     }
 
diff --git a/winbuild/config.py b/winbuild/config.py
index b21fe55b1..826c6183c 100644
--- a/winbuild/config.py
+++ b/winbuild/config.py
@@ -8,7 +8,7 @@ pythons = {
     "36": {"compiler": 7.1, "vc": 2015},
     "pypy3": {"compiler": 7.1, "vc": 2015},
     "37": {"compiler": 7.1, "vc": 2015},
-    "38rc1-x64": {"compiler": 7.1, "vc": 2015},
+    "38": {"compiler": 7.1, "vc": 2015},
     # for GitHub Actions
     "3.5": {"compiler": 7.1, "vc": 2015},
     "3.6": {"compiler": 7.1, "vc": 2015},
@@ -34,9 +34,9 @@ libs = {
         "dir": "jpeg-9c",
     },
     "tiff": {
-        "url": "ftp://download.osgeo.org/libtiff/tiff-4.0.10.tar.gz",
-        "filename": "tiff-4.0.10.tar.gz",
-        "dir": "tiff-4.0.10",
+        "url": "ftp://download.osgeo.org/libtiff/tiff-4.1.0.tar.gz",
+        "filename": "tiff-4.1.0.tar.gz",
+        "dir": "tiff-4.1.0",
     },
     "freetype": {
         "url": "https://download.savannah.gnu.org/releases/freetype/freetype-2.10.1.tar.gz",  # noqa: E501
diff --git a/winbuild/lcms2_patch.ps1 b/winbuild/lcms2_patch.ps1
new file mode 100644
index 000000000..7fc48c034
--- /dev/null
+++ b/winbuild/lcms2_patch.ps1
@@ -0,0 +1,9 @@
+
+Get-ChildItem .\Projects\VC2015\ *.vcxproj -recurse |
+    Foreach-Object {
+        $c = ($_ | Get-Content)
+        $c = $c -replace 'MultiThreaded<','MultiThreadedDLL<'
+        $c = $c -replace '<WindowsTargetPlatformVersion>8.1</WindowsTargetPlatformVersion>','<WindowsTargetPlatformVersion>10</WindowsTargetPlatformVersion>'
+        $c = $c -replace '<PlatformToolset>v140</PlatformToolset>','<PlatformToolset>v142</PlatformToolset>'
+        [IO.File]::WriteAllText($_.FullName, ($c -join "`r`n"))
+    }