[UPDATE: The Fall 2012 Content Pack is now free.]
Tripwire Interactive has announced that Red Orchestra 2 will enjoy a free weekend on Steam starting tomorrow to celebrate the release of the Fall 2012 Content Pack. Tripwire will also be selling the DLC at 75% tomorrow.
The DLC includes a new map Barashka which originally was in the original Red Orchestra, allowing combined arms combat with villages, bridges and a river crossing. The map will support the Territory and Countdown game modes.
There will also be a patch that fixes some community requirests like the ability to walk while actively firing machine guns from the hip; increased stamina pool in Classic; chat system refinements and other fixes.