I don't think it will happen, though; the ratio of people who care about the elegance of their processor's assembly language to people who buy computers is just

I don't think it will happen, though; the ratio of people who care about the elegance of their processor's assembly language to people who buy computers is just too low. Not in form of a clean cut, at least: x86-64 brought us eight additional registers and removed the silly BCD-instructions.