I keep hearing that there will be no 8600 Ultra released.
I posted this on NCIX the other day and we will see how true it holds.
So far I have been spot-on with my first three predictions.
8800GTX 768MB = 7800GTX 512 (launch price = $649 USD)
8800GTS 640MB = 7800GT (launch price = $450 USD)
8800GTS 320MB = 7900GT (launch price = $299 USD)
8600GTS = 7900GS (launch price = $220 USD)
8600GT = 7600GT (launch price = $200 USD)
8500GT = 7300GT (launch price = $99 USD)