It is me, or is Haswell taking a very long time to become available everywhere? The Haswell Mac Air came out 3 months ago, (June 10th), but you still can't get it in a MBP or a Thinkpad, and can only now get it in an iMac.
Haswell is more different than ivy bridge. More changes, more verification. Apple and thinkpad lines are also the slowest updating, IMO. They keep existing models around for a lot longer than the two weeks it seems acer or asus do.
Uptake on next gen processors is unbelievably slow. You can find them if you look hard enough, but manufacturers seem to have more backstock than they can clear out.
The yields from the fab are probably still pretty low despite the 22nm process being carried over.