Activision sends along a new DOOM 3 patch, which is no longer beta and now updates the game to version 1.1. The change list is pretty much identical to the 1.05 beta one, but there is an extra singleplayer fix which people had been asking for: "Fixed issue when switching between flashlight and previous weapon after using the PDA" - and unlike in the beta patch, the shadow and specular cvars are NOT cheat protected. As before, the update resets your progress in a saved game, so you'll have to play whatever level you're on from the beginning.