I have tested with the iOS Beta version while writing a 3D sports simulation game. I have missed these: a full object DB with a query language. Right now I use rucksack which serves my needs. Very productive to not have to deal with Core Data!!!

The other thing I miss is live edits, though using TCP sockets while having the device on the same network will work. But I don't know how to overcome iOS security restrictions which prevent compilation of new code.

Being able to write AI for a game and all game logic in CL is complete fun, as usual.