DAAMIT again delayed its graphic products. It is not R600 this time, as ATI had to delay its original plans with RV630, aka Radeon X2600 generation.
The reason is simple, the current Asic has a problem and DAAMIT needs more time to fix it. It delays its original plans by 4+ weeks.
The bad part is that the volume production starts on June and Nvidia will dominate with Geforce 8600 got at least two months before it gets any competition.