Titled Into the Jungle, the 6th Chapter of Battlefield V's Tides of War campaign releases on the 6th of February. This chapter pits the Americans and Japanese against one another in the jungle terrain of the Solomon Islands. Five new weapons also make their debut: the Type 11 LMG, Model 37 shotgun, M2 Carbine, M1A1 Bazooka, and Lunge Mine Gadget. These are all unlocked through Chapter Rewards alongside three new elites, one of which also as a chapter reward. These rewards are unlocked simply by playing the game and offer the best new gear from the Ranks. More rewards are available via the Weekly Challenges.
Like all post launch content in Battlefield V, Chapter 6 is a free update. However, booster packs are available via in the in-game store. More details around Chapter 6: Into the Jungle, may be found on the official site: https://www.ea.com/en-gb/games/battlefield/battlefield-5/about/tides-of-war/all-you-need-to-know-chapter-6-into-the-jungle