With the release of Destiny 2’s Beyond Light, large majority of content and loot from previous years has been vaulted. As such, the loot pool is looking incredibly shallow. To address this, Bungie will release hotfix on November 24th which adds previous seasonal Legendary weapons to the world loot pool.
These include all of the Seventh Seraph weapons from Season 10, along with seasonal and reprised planetary weapons from Season 11. Drop chances are also being weighted to ensure that newer items are more likely to drop. Meanwhile, Legendary weapons that have already hit their infusion cap for this season will be removed.
All in all, this is good news. The Seventh Seraph weapons are some of the best in the game due to their ability to spawn Warmind cells which cause massive amounts of damage when detonated. Likewise, Season 11 aka Season of Arrivals also had some great weapons like Falling Guillotine that will be worth acquiring. Stay tuned for more details when the hotfix goes live.