After going on wikipedia, i put in GeForce 8 Series and saw that new releases are coming out in march and april. To have a look at these specifications, scroll down to future development.
Oh and i just noticed another link directing me to the Radeon R600. To see these specifications, scroll down to Possible naming and lineup.
I've just had a look at them and they seem to be the most powerful graphic cards i've ever seen!!!!!
If some of the details have a ?, then they should be there soon but the prices dont look too bad compared to the current DX10 top of the range cards out at the moment.