CollectionView fast path. Still says "warning" in comments, but should be pretty stable now. Still needs more people to test it though.
Lots of touch fixes
Touch intercept support: hasTouchIntercept, I think? But that API could potentially change, so may not want to mention it too much (naming is a bit off; "hasTouchIntercept" should be "wantsTouchIntercept" or something).
wantsAcceleratedLayer
I thought we added an Automatic Bug Fixer, but couldn't find it.
We need release notes.