This is a multi-player alpha, and includes three traditional 6v6 modes across two maps, as well as Domination on the new 12v12 Combined Arms mode. It’s free-for-all PS4 users, and you don’t need PlayStation Plus either.
As per Activision’s partnership with Sony, this alpha is PS4-exclusive. The open beta is a timed PS4 exclusive. If you pre-order Treyarch and Raven’s shooter at the PlayStation Store, you can play the beta on 8th October 2020 on PS4. The beta then opens only for all PS4 players on 10th October for the weekend. The beta then returns on 15th October on all platforms, ending for all on 19th October.
In the meantime we have published some video from Modern Warfare: