Variants focusing on differing levels of power and performance will begin shipping by the third quarter of the year as HE, SE, and EE versions. There's no mention of a transition to DDR3 platforms, with AMD believing that DDR2 is still the memory of choice for the enterprise. The processor vendor cites that low TCO is a concern for themselves as well as their customers, which probably has a lot to do with a six-core offering as opposed to eight. It also likely has a lot to do with the engineering involved, as AMD has already indicated they believe that triple-core processors have room to grow on desktops.
IBM, Sun, HP, Cray, Dell and others are planning to release Istanbul-based servers soon. You can read the official press release here and view some additional information over at the company’s blog.