There's an article in this weeks Micro Mart mag about cpu's and it claims an expected rollout from April with the following roadmap:-
Sempron- 2ghz 3000+, 1 core, 128kb L2, codename Manilla, Apr06.
2.333ghz 3500+, 1 core, 128kb L2, codename Manilla, Apr06.
2ghz 3200+, 1 core, 256kb L2, codename Manilla, Apr06.
2.167ghz 3400+, 1 core, 256kb L2, codename Manilla, Apr06.
2.333ghz 3600+, 1 core, 256kb L2, codename Manilla, Apr06.
2.5ghz 3800+, 1 core, 256kb L2, codename Manilla, Apr06.
Athlon 64- 2.333ghz 3500+, 1 core, 512kb L2, codename Orleans, Apr06.
2.5ghz 3800+, 1 core, 512kb L2, codename Orleans, Apr06.
2.5ghz 4000+, 1 core, 1mb L2, codename Orleans, Apr06.
Athlon 64 X2 & FX-
2x 2.333ghz X2 4200+, 2 cores, 2x512kb L2, Codename Windsor, Apr06.
2x 2.5ghz X2 4600+, 2 cores, 2x512kb L2, Codename Windsor, Apr06.
2x 2.667ghz X2 5000+, 2 cores, 2x512kb L2, Codename Windsor, Apr06.
2x 2.5ghz X2 4800+, 2 cores, 2x1mb L2, Codename Windsor, Apr06.
2x 2.667ghz X2 5200+, 2 cores, 2x1mb L2, Codename Windsor, Q4 06.
2x 2.833ghz FX-62, 2 cores, 2x1mb L2, Codename Windsor, Q4 06.
2x 3ghz FX-64, 2 cores, 2x1mb L2, Codename Windsor, Q4 06.
I don't know if the release has slipped by now as the article was probably written a couple of months ago, but it gives an idea of what is coming. That FX-64 promises to be a beast though.
All the Athlon 64, X2 and FX chips will support vitualisation which as i understand allows multiple operating systems to be installed and all of them running simultaneously although why you would want to do this is beyond me. Linux and windows together maybe?