ATI will quietly introduce the R600PRO and name it rather logically the Radeon 2900 PRO. The card will be priced $249 at launch and the card will be faster than the Geforce 8600GTS cards, even the overclocked ones.
It won’t be enough to beat the Geforce 8800 GTS 320MB and you will still need a Radeon 2900XT to go against this card. The cards will silently show up in the channel some time in the middle of the month and some partners might do some PR thing about it, but AMD won't make a big deal out of it.
The R600PRO is the last chip this year, but ATI might do even one more version of R600, but this will be decided later.