A patch that is tentatively slated to be released tomorrow, February 12, will add in some new content and features for Battlefield 5 players. Some of these new features include a four-player co-op game mode called Combined Arms. The update will also add in DLSS support and better RTX support for those using supported cards.
DLSS is a new technology that, in simple terms, makes the game look better and perform better through machine learning. It's mainly useful for resolutions at 4K or better and should, in theory, constantly result in better performance and near identical image quality compared to a non-DLSS native 4K resolution.
Combined Arms was first mentioned back in 2018. You and up to three of your friends will take on A.I. enemies through a series of eight different PvE missions. These missions will have a variety of objectives and take place over four different maps.
In addition, those looking for some competitive thrills will be happy to hear that Rush is coming back in early March. It will be available only for a limited time though.
The full list of changes can be found here (PDF). The list is rather extensive and includes details about map fixes, weapon balancing, weapon damage adjustments, changes being made to armored vehicles, adjustments to better sync up TTK and TTD, and more. I've seen a few people saying that the release date may not end up being February 12, but so far that's the solid only date we've seen.
