I think there will be a lot of people cancelling and jumping on the canon raw parade. so pre orders are probably diminishing as we speak.
I'm hoping everyone cancels, jumps on the shallow dof bandwagon like back in 2009 (but this time with raw), and leaves the smaller more tactful sensor size less used leaving potential for us who are sticking with it with the aesthetic edge.
I have to say I'm on the cusp of looking at a 5dmk3, but the idea of a silky smooth s16mm sensor (and its limitations) is one that is very attractive to me, where most are hankering after a larger sensor again.