AMD is the only future for Apple right now. Intel has forced Apple's hand with its "I'm taking my ball and going home" lawsuit against Nvidia about Nvidia's chipset manufacturing license (i.e. Nvidia cannot make chipsets for Intel's latest processors). The reason is simple, graphics. Yes, Intel SandyBridge is including GPU-capabilities on-die, but that's not enough for mainstream and enthusiast users. Apple still needs a discrete-option, and right now, only AMD offers Chipsets + Discrete GPU solutions. Nvidia can provide GPUs, but they can't provide motherboards and chipsets for Intel. Intel can provide chipsets, but they have no discrete option.
Apple doesn't want to go to multiple vendors (that defeats the whole "it just works" philosophy). They want a single provider. AMD can offer a CPU Chipset+GPU solution at every level (on-die with Fusion to discrete with Radeon). It just makes sense with Apple's business strategy.
Still, knowing Apple, it will be overpriced.