Im sure you know the difference between WHQL and beta drivers right? making statements like "half-assed" is rather unnecessary.
Unlike the 7950GX2, nVIDIA was replacing their entire lineup with G8x derivatives. It was logical to think that support for the 7 series weren't going to last long, especially for the high end. But as of now, its alot different. G8x/9x derivatives which share the similiar architectural traits aren't going to be replaced by G2xx in the mid/low range til maybe later next year (since the 55nm refreshes of the 9 series are acting as a filler for now). Support for the 8/9 series will still be strong til nVIDIA sees the need to release its newer mid range parts. Since 9800GX2s are basically two 8800GTs/9800GTs in SLI, i still think driver support will be there.