DailyTech has a post up that talks about the Quad-Core Opterons, they have a spec sheet and all. The earliest of them are going to start production in June of this year, they will begin selling them in the middle of this year aswell. The desktop consumer level on socket AM2 will be under production in Q4 of this year and the launch is to be determined.
Check out the whole article here at DailyTech.