According to a news post on the official Battlefield website, a new game mode is coming January 18th. This mode, called Bleed Out, is “a custom version of Rush where downed enemy soldiers respawn faster than usual and regenerative health is turned off.”
The post also mentioned a patch set to come out in February, with the promise of more details and full patch notes to come soon.
In Meta: This is absolutely the right direction for DICE to be taking this game in. On a personal level, the limited selection of maps and modes drove this game stale very quickly. It’s good to see a fresh content coming to the game, especially for free. It might even be enough to tide fans over until the first expansion in March.