diff --git a/Getting-to-1.0.md b/Getting-to-1.0.md
index 49c20b3..b054fa0 100644
--- a/Getting-to-1.0.md
+++ b/Getting-to-1.0.md
@@ -30,7 +30,8 @@ Stuff that needs to change
   + Provide a `reverse` call that extends the standard `reverse`,
     but can take the current request as an argument if an absolute URL is required.
 7. Hooks throughout for creating `.resource`, `.serializer`, `.renderer` etc... instances inside the View, given the classes.
-8. `InstanceMixin` needs to disappear.
+8. Drop support for unnamed args in URLs filtering as pk.  Better to always be explicit in the urlconf.
+9. `InstanceMixin` needs to disappear.
 
 Stuff that might not be quite perfect, but will do for now
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