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 $US1000 or more per chip. Gulftown is also rumoured to be the processor for the next Mac Pro.
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]