Hexus has spotted P55 motherboards for Intel Core i5 processors at CeBIT; they've taken pictures of models from Biostar and Jetway.
The Intel P55 (Ibex Peak) chipset will provide support for the LGA1156 chips, and you can think of it as a cut-down X58 in most respects.
Vendors are likely to ship boards with two PCIe x16 slots that operate at x8 when in dual-card mode. Support for both CrossFire and SLI should remain intact, of course.
Pictured on the left is the one from Jetway, and the right one is from Biostar. You can find more details and larger pics at Hexus.