That's what is going to tick a lot of enthusiasts off and hurt sales. A LOT of people invested in 1156/1366 systems only to see Intel cut them off by going to a new socket so soon. To upgrade they will have to replace both CPU and motherboard... and in today's economy not many can just do that at the drop of a hat.
With that said, what are the prices going to run on the CPUs and mobos?