A lot of big customers are waiting for the 65 nanometre RV610, also known as the Radeon HD 2400 series of chips. In turns out that there are sampling problems, just as with the RV630 mainstream chip.
DAAMIT, it is a serious bug as some chips don't work with any 3D applications, while others have the Video and HD part broken.
These chips will be delayed until late June at the earliest and if anything else goes wrong, even later. Nvidia couldn't be happier.
RV630 A12 samples broken