A new mini-event is now live in Borderlands 3. The Golden Path encourages you to power-level a new character from now until December 4, with guaranteed legendary loot drops.
The Legendaries only drop in the main story campaign bosses, not side-bosses. Hence, the mini-event name.

This is a good reason and time to get that Designer’s Cut DLC, part of Season Pass 2 which adds a fourth skill trees for all four Vault Hunters. Or if you still haven’t finish the game yet. Now you’ll be raining in gold loot as you push through the not-so-good main story.
Borderlands 3 is out now on PS4, PS5, PC (Steam, Epic Games Store), Xbox One, Xbox Series X|S and Stadia. The next-gen versions are free upgrades to existing owners.