A Rainbow Six Extraction buddy pass has been confirmed, along with the game's release date on January 20, 2022.
Ubisoft confirmed the game's release date earlier today, noting that it will also launch with a "cross-play Buddy Pass system." Each standard edition of Extraction sold will offer buyers two Buddy Pass tokens, allowing them to invite their friends to play with them for two weeks at no extra cost.
Any progression made in those two weeks will carry over if the Buddy decides to buy the full game, and cross-play means you'll be able to give the benefit to players on other platforms. The deluxe edition comes with an extra Buddy Pass. It's not entirely clear whether you'll be able to stack passes up, granting up to six weeks' free access for one player, or whether you'll be capped at two weeks for each extra player.
