Intel started talking about Gulftown in February, saying the six-core, 32nm processor would come out some time after the first dual-core Westmere offerings. Those are on track to hit production late this year, but Intel has so far stayed mum on its specific schedule for Gulftown.
According to Fudzilla, the chipmaker has nevertheless settled on a release time frame internally: the second quarter of 2010. In case you didn't get the memo, Gulftown will feature six cores, 12 threads, and backward compatibility with existing X58 motherboards. In other words, it could be a drop-in upgrade for existing Core i7 systems.
Fudzilla goes on to say Intel has told "a special few" that Gulftown processors will have 130W thermal envelopes. Supposedly, though, these CPUs will only have official support for DDR3 memory speeds up to 1066MHz.
AMD is also planning a six-core processor that'll be a drop-in upgrade for current systems. However, Istanbul will be a workstation and server offering, and AMD hasn't announced a desktop derivative (yet).