NVIDIA has pushed the release of the GeForce 7950 GX2 back a week to the 6th of June. The big kicker is the following statement from NVIDIA:
On MAY 30 NVIDIA will launch GeForce 7950 GX2. This product will be the fastest single card video card solution available. At launch, only single GeForce 7950GX2 configurations will be supported. QUAD SLI systems will continue to ship with 2x 7900 GX2. Schedule for 2x 7950 GX2 QUAD SLI will be updated on MAY 30. Sample product on 7950GX2 will be shipping today. EVGA, BFG, and XFX all have stock of 7950 GX2 and will hard launch.
Everyone wanting to use QuadSLI needs to get their hands on the old and long 7900 GX2s, instead of the new and short 7950GX2. There have been a lot of problems with the QuadSLI setups and NVIDIA seems to be working on a fix, but until then no QuadSLI with your brand spanking new 7950GX2 at launch.
http://www.dailytech.com/article.aspx?newsid=2477