As part of EA Play Live, EA and developer Ripple Effect announced Battlefield Portal, and it sounds like one of the more exciting new additions to Battlefield in years.
Battlefield Portal is a new "community-driven platform" that lets players create their own Battlefield fantasy. It features fan-favorite maps from Battlefield 1942, Battlefield: Bad Company 2, and Battlefield 3, in addition to the seven maps from Battlefield 2042 at launch. Using what's described as a "powerful creation suite," players can create their own gametypes and play around with various settings. They can even use a logic editor to more specifically tune things. Progress and XP is shared between Portal and the game's other modes, All-Out Warfare and Hazard Zone.
Weapons, vehicles, and equipment from each of the games is available in Battlefield Portal. So you can have World War II soldiers doing battle against enemies from Battlefield 2042's near future. You could have a knives vs. defibrillators battle, if that's what you want.