I think Bosscher's suggestion that the shipping ObjC 2.0 binaries may not match the publicly visible sources would be a legally risky action on Apple's part. As I understand it, Apple has assigned copyright to FSF in the past, so there is a good chance that SOME of the code in the 2.0 release is legally owned by the FSF. Apple would be setting themselves up for legal action under GPLv2 requirements. This assumes that I understand how the code has flowed in the past. Hopefully someone closer to the code can correct me if I'm wrong.