Lots of closed testing footage made available recently. New maps look good, ALL THE GADGETS ARE IN, and more vehicle variety such as my sweet, sweet transport helicopter with dual gunners.
The BR also has a lot of footage and it looks a LOT like Warzone. Plating, movement, upgrade machine, loadouts, etc. I'm fine with that if they make it not run-n-gun smg aim assist dogshit like Warzone ended up being. Also apparently you can get Tanks and stuff in the BR which I think you do via doing in-game quests during the round.
Also according to someplace I already forgot you can choose what to install. The story mode, the multiplayer, and the BR can be downloaded specifically or altogether. And I believe they said the BR, which launches a bit after the official Oct 10th release is 100% free. You won't even need to buy BF6 itself.