A large DLC called Return to Palmyra was released. A sizeable new campaign with new missions, new voice acting and music, new troops and vehicles. You can read the detailed description on the DLC's store page.
Due to the DLC's release we've updated the original game to version 1.1.0.7.
The main change is a reworked ally and enemy AI. They can now repair their vehicle if it's heavily damaged, as well as return to crew it after leaving it due to a fire. In certain circumstances they can also capture the vehicles you've abandoned, repair them and continue the fight using your tanks.
Also: all the new music tracks added in the DLC are available to the owners of the OST, free of charge.