From the Steam Forums:
Hey all,
The first major patch for Dungeon Siege III has been rolled out today!
We're glad to be able to implement this much-discussed feature to the community, and we hope that you enjoy this update!
In addition, we have also implemented two new controls that will allow the player to move left or right (think strafing). This is also customize-able in the keybinding menu.
Lastly, this patch fixes a couple more issues that have been found by the community:
Fixes an issue where the gamepad would default to on, even if you have no gamepad plugged in.
Fixed an issue in Multiplayer where if either the host or the client is using a gamepad and are playing with someone who is using the mouse/keyboard, the host hangs when switching to the ending cutscene.
Fixed an issue with certain graphic cards where it would occasionally display large black pixels in the middle of the screen.
Fixed a potential crash when players try to reconnect after disconnecting during a conversation.
We've implemented a fix that will revert the A/D reversed issue for people that are still reporting this issue.
Fixed a potential crash when players would join a Multiplayer game in a certain order.
Thanks again for letting us know your feedback, and Happy Looting!