White Screen of Depression!
I made the jump and let it upgrade my project, but it exploded :(( (or so I thought). First, I was just getting a white screen with no logging. Took me a little bit to find it, but eventually I found that there's a "Library" item under the application "Resources", and it wasn't set to debug. I turned on debug and saw that there were errors about circular references/dependencies (due to the overrides). I removed an override and recreated it and noticed that it changed the "requires" definitions in the overrides to a simple "override" property. Bring my overrides up to speed did the trick, and my heart slowed a pace. ~o)
Looks like some good new features in this release! Looking forward to put them to use.