David Chisnall has written an article entitled "Behind the Scenes of Objective-C 2.0".
It introduces the history of Objective-C, as well as its present state. There is discussion of the new features of Objective-C 2.0, including garbage collection, method attributes, properties, the for each loop, and more. He finishes up by talking about features that he was hoping for, but that were not included. Such features include blocks, an equivalent to Smalltalk's become: method, and an improved preprocessor.
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