Maybe it's not true now.
Perhaps this is some other product, a large iPad with keyboard cover?
But eventually Apple will leave niche "high performance" users in the lurch. They will aim for volume market, iTunes lock in etc. So eventually the ARM will replace x86 for Apple. Unlike MS, they switched before. 68000 and then Power PC. So they have no loyalty to a CPU ecosystem and certainly the possible deprivation of rebooting to windows will be low priority.
Nothing new, it's been said before. I've said it before. But I think 2015 - 2016 more likely.