Apple was on Motorola 68k for some 10 years, then on PowerPC for some 10 years and now they're five years on Intel. If this is a pattern, they may be working on

Apple was on Motorola 68k for some 10 years, then on PowerPC for some 10 years and now they're five years on Intel. If this is a pattern, they may be working on the "next big thing" in a lab somewhere. We know that OSX is very welcoming to architectures, with it's NeXT roots supporting four architectures simultaneously. A situation of a low-power ARM and high-performance Intel similarly to the dual-GPU architecture seems more likely.