Crytek's official message boards for the game have revealed the patch notes for the just released 1.2.0.0 PC patch. The notes reveal that the patch contains some more anti-cheating measures along with the option for crouch toggle in both single player and multiplayer.
There's also some login issues that are fixed as well as one that caused some players to lose Nano Catalyst points after restarting the game. Steam users who have already downloaded the patch are apparently getting some long loading times but the Steam version should have that fixed in a few days.