Amm Intel did delay Sandy bridge and they did it to try and implement something which SB does not have and BD does. Tough the implementation is very hard to accomplish i have been told 3-4 teams are working on it right now, one may call it the v1.1 the v1.0 of SB is all ready for the fight....

If the v1.1 works out it will get relesed in stead of the v1.0 otherwise v1.0 will be used, in tis case IB will come sooner than later.