Five chipsets for Ivy Bridge are 70 series

Q or H makes the difference
In normal performance factor, where size doesn’t play a key role, the QM77 takes charge and HM77 and HM76 will take more of the mainstream market. HM75 is the cheapest and least powerful chipset with some options cut off and all of them are scheduled for aligned launch with Ivy Bridge in March / April 2012.
At this time we don’t have more information other than names but, as usual, stay tuned.