Intel Bearelake boards slipped to May. Some boards might be ready in late April but most of them won't see the light of the day till May.
We know that tier one Add In Board partners have P35 DDR2 and DDR3 versions in works and some of the boards might get sampled in next two weeks.
It is still hard to find DDR3 as only Quimonda has it in the wild and Kingston and Corsair are suppose to have some modules, but only at default speeds. It will definitely be fun to compare DDR2 board versus DDR3 in the same chipsets to see how much we can benefit from the new faster memory marchitecture.