According to the Ubisoft DM community manager Ubi_Rickas, two patches for Dark Messiah singleplayer and multiplayer are on the way! Here are the major changes:

Singleplayer:

* The “hard” difficulty setting of the game has been totally reworked and is now harder
* Global difficulty has been adjusted in the second half of the game to better reflect character evolution
* An intermediary texture details level has been implemented. As a result, the former “high” setting has been renamed to “very high”
* All major bugs have been fixed, except one that is still being tracked by the teams and will be fixed in the coming days

Multiplayer:

* New game mode: capture the flag
* New maps for capture the flag mode: CTF_1 and CTF_2
* All existing maps have been tweaked
* Introduced several options to tweak game setting for lower configs
* All classes have been tweaked for balance

Especially interesting looks the new mode of the multiplayer! We will immediately inform you once these long awaited patches are out.