The End of Apple as We Know It? I can barely believe this. I don't see how Apple expects their admittedly limited stable of third party developers to rewrite all of their code for the x86 architecture. It's not just a matter of recompiling; any sort of hand-tuned assembly, such as Altivec, will have to be completely rewritten. For an example of the difficulties that can arise from porting from x86 to PPC, check out the various stories on the Mac version of Doom 3. After reading some of the comments, I suppose it is possible that Apple might switch to the Itanium's IA64. I just don't see how it would make sense though.