Nvidia Fermi 360 aka Geforce 360 and Fermi 380 aka Geforce 380 release 2nd - 10th of March 2010. Fermi 395 aka Geforce 395 release around 10th of May 2010. All schedules are prone to change.
360 vs 5850 = 360 winner
380 vs 5870 = 380 winner
ATI 5830 by 5th of February 2010, specs: 625Mhz GPU core, 800Mhz DDR5 memory, 1280 shaders, same PCB, cooling and 256 bit BUS as 5850 rebined 5850s.
AMD to release Phenom 2 X4 975 3.6Ghz L2 Cache 2Mb, L3 Cache 6Mb, 140 TDP in Q1 2010.
AMD Phenom II Thurban X6 1075T 2.8Ghz L2 Cache 2Mb, L3 Cache 6Mb, 125 TDP by May 2010.
New stepping arriving from Opterons reducing Deneb and other AMD CPUs by 15W - TDP ;-D.
All info should be taken with few grains of salt ;-D.