That would mean porting OS X to work on AMD. Just like how Apple did the transition from PowerPC to Intel. That is very unlikely.
AMD and Intel's X86 chips are compatible AFAIK.
So, where is this "Best Product Pipeline in 25 Years Coming Later This Year From Apple" going to start? All I see is garbage "updates" (e.g. slower iMac and 5th Gen iPod Touch). He's obviously only referring to the products they care about and that's the iPhone, iWatch, and iPad products...they con't give a crap about desktops any more.