Source: http://uk.geforce.com/hardware/technolo ... technology
With DirectX 11, tessellation and displacement mapping finally come together in a happy union, and already, developers on jumping on board. Popular games like Alien vs. Predator and Metro 2033 use tessellation to produce smooth-looking models, and developers at Valve and id Software have done promising work on applying these techniques to their existing game characters.
Personaly I think that tesselation can, if used correctly, turn up atomsphere and bring very much depth to games. Especially in singleplayer of course. But I can´t wait to se how Valve takes use of such thing, the result can only be epic^^
But do you think Portal 2 will include tesselation, or any Dx 11 for that matters?