It's all from anonymous sources, but at least on the Intel side the information matches up with what we've seen previously. Gulftown (aka the Core i7-980X) will apparently be available as early as this March, although at a hefty $1,000 or more per chip. Gulftown is also rumored to be the processor for the next Mac Pro, so it's encouraging to see it nearly ready to debut.
On the AMD side, you'll have to wait a little longer. According to DigiTimes, the Phenom II X6 1075T, 1055T and 1035T, all 45nm process chips, will be available in May. [DigiTimes]