The Reg has a ton of details posted about the 1H 2009 launch; a good primer if you haven't been keeping up on your Intel roadmaps. They also mention AMD's GPU-on-CPU plans for completeness.

"Bloomfield appears to be something of a stop-gap product, because roadmaps seen by PCWatch show a follow-up part, 'Lynnfield', due in H1 2009. It cuts the interconnect down to 1160 LGA pins and the adoption of PCI Express as the chip-to-chip bus."