Bandai Namco has announced that an open beta for Dragon Ball FighterZ will be taking place sometime next month. This will be open to all players regardless if you have pre-ordered the game or not.
The Bandai Namco Europe Twitter page announced the following: “Beerus, Hit and Goku Black join the roster of Dragon Ball FighterZ! And the Open Beta will take place January 14th to 15th. Preorders will get early access from Jan 13th. More details to come!”
Bear in mind, you have to check with your own retail store if they are honoring the added bonus of accessing the beta a day early if you pre-order the game. The beta is only taking place on the PS4 and Xbox One so PC players miss out.
Anyway, the game itself is released in North America and Europe on January 26th, 2018. More details on what the open beta will include will be announced in the near future.