Found some information about Objective-C 2.0
andymatuschak.org: Clues to Objective-C 2.0
"The secrets lie in Apple's branch of gcc in the gnu.org repositories, where the changelogs are quite telling. Especially in the testing suites. So following is a list of ObjC 2.0 additions and places where you can see them in the repository."
Lots of good stuff coming, it's extremely encouraging to see that Apple is finally making improvements to the language. Obj-C needs to improve just like other languages have been.
Written on October 14, 2006