Battlefield 3 Premium members, players who have preordered the Digital Deluxe Edition of Battlefield 4 on the PC, or those who own Medal of Honor: Warfighter Limited or Digital Deluxe Edition have had access to the beta since Tuesday.
The beta features the Siege of Shanghai map in Conquest or Domination mode, alongside new features and elements like Levolution and Amphibious Assault.
Battlefield 4 launches on Oct. 29 for the Xbox 360, PlayStation 3, and PC. The PlayStation 4 version arrives on November 12, while owners of Xbox One will be able to get their hands on the game Nov. 19.
For a $10 upgrade fee, players can begin their progress on current-generation versions and have that experience carry over to the next-generation version.