Does anyone know the name/specs of future ATI/Nvidia mobile graphics sets? For instance, does anyone know what ATI/AMD plans to replace the X1600XT with as the middle performance graphics processor in 2007? I plan on buying a Macbookpro sometime before the fall (using a powerbook now and want to upgrade for the next OS but I figured I will wait until LED backlit screen, Santa Rosa, and new GPU which will probably come with it.) Sorry if this has been asked before, I really did search google, multiple other websites, and spent the last 45 minutes searching the forums. A little more searching and it may be this card- ATI x2600 Anyone have any info on it?