Borderlands 3 will release on Steam worldwide on March 13, 2020 and will support PC cross-play. In addition to announcing the Steam release date, 2K also answered questions regarding cross-play in a Q&A. [Thanks, Famitsu!]
Pre-loading Borderlands 3 on Steam will begin on March 11, 2020. Once you have pre-loaded the game you can immediately begin playing on March 13, 2020. In addition to this, with the power of SHiFT players will be able to engage in cross-play. You will be able to enjoy cooperative play with friends regardless of where you purchased Borderlands 3.
You will also be able to transfer saves between your Steam and Epic Games Store versions of Borderlands 3. Players will need to move your save files manually, however. There is no official service or method to transferring save files, and Gearbox warns players that they will be at risk of potentially losing their saves if it is not done properly.
However, if you’re looking to use DLC between your version of Borderlands 3, you won’t be able to do so. You will need to re-purchase any add-ons you want to use, as DLC purchased through the Steam won’t be transferred over to the Epic Games Store and vice versa.
Despite the announcement of cross-play coming between PC versions, there is currently no announcement regarding cross-platform play between PC and console versions at this time.
Borderlands 3 is available for the PlayStation 4, Xbox One, and PC. The $49.99 season pass gives people access to all four campaign add-ons and the Butt Stallion grenade mod, weapon skin, and weapon trinket.