YouTuber Drakesden posted a video allegedly revealing several bits of information for Electronic Arts upcoming Battlefield game with one of these bits being vertified by AlmightyDaq who also leaked information in the past.
Drakesden says that the game will feature seven base game factions. These include the USSR, Imperial Japan, Third Reich, Kingdom of Italy, Great Britain, United States, and Free French Forces. The game will also feature 10 base maps and is being developed using game engine as Battlefield 1 and Star Wars Battlefront II.
Battlefield 2018 will also feature microtransactions, but those will mostly be just cosmetic.
Please keep in mind these are still rumors and nothing has been directly confirmed by any parties involved with the development of the game.