https://www.polygon.com/2018/8/22/17766888/destiny-2-forsaken-clan-perks-gambit-ranking-infamy

Destiny 2 introduced a new clan system when it launched last year, one that offered rewards and is central to the new Guided Games feature. Many of the perks it offered between seasons 1 through 3 didn’t particularly wow players in clans, though. Bungie has announced that the clan perks in season 4 are much better, even giving some concrete details about the upcoming expansion’s bonuses. The studio also announced that Gambit — Forsaken’s flagship mode — will include a built-in ranking system.

Players will earn clan perks in Forsaken by gaining experience over the season, however, the leveling process is a bit more interesting. Clan bounties will now attribute to your clan’s overall experience. Players will have to complete activities with their clan mates to complete these.