The Battleborn open beta begins tomorrow, April 8th, on PlayStation 4 whilst PC and Xbox One gamers get their hands on it on April 13th. However,  you can pre-load the beta as of right now on all platforms, click here for the EU PlayStation 4 version.
The beta includes  two Story Mode episodes, two competitive multiplayer modes, 25 heroes to play as, and three different progression systems.
There is also a new Battleborn Bootcamp trailer starring Oscar Mike and ISIC who want to recruit you join the Battleborn and the fight to save the Solus, the last star.
Source: Press release