If only these had performance boosts like drivers did...
...Do they? Or is it just adding new API extensions, which is why you see every game include its own installer of the last version they used?
Also installing these updates does not help with games that are already out FYI. The way DX works, the game is programmed to use whatever the current version was at the time of production, and anything changed or fixed in subsequent updates will not be used by the game.
Edited by timAHH - 6/8/10 at 10:46am