The game will launch on October 12, 2021 and will have an open beta on August 12. Pre-ordering the game lets you enter the beta a week early on August 5.
Reddit user JohnTLH spotted the information in the description of a Back 4 Blood live stream. The stream has now been made private, but JohnTLH managed to take a screenshot.
The full reveal stream is set for 10pm BST on June 13.
Full details of the open beta are available on the Back 4 Blood website where players can register for access to the beta.
A WB games account is required to redeem the beta access code. According to the site, registering also gives you the chance to join the early access beta period, but this is not guaranteed without a preorder.
The game will feature hordes of zombies bolstered by special enemies. There will be a cooperative story campaign in a dynamic world and competitive multiplayer with player-controlled zombies.
E3 2021 continues with the Ubisoft Forward stream on June 12. The pre-show begins at 7pm BST with the main show starting at 8pm BST. The publisher and developer will likely show more of Far Cry 6 and the coop shooter Rainbow Six Extraction.