A post on the Borderlands Website has details on new Borderlands 3 content coming to Gearbox's looter-shooter sequel for those who purchase Season Pass 2, the Designer's Cut DLC, or the comprehensive Borderlands 3 Ultimate Edition on November 10th. They reveal a new gameplay mode called Arms Race, which is shown off in this trailer. They also further discuss the new skill trees for each playable character, illustrating that news with this trailer. Here's more on Arms Race:

Arms Race is included in the new Designer’s Cut add-on, the new DLC that's available in Season Pass 2 or as a standalone purchase starting November 10, and offers a fast-paced, roguelike experience. In this challenging new mode, you’re stripped of all your gear and dropped into a new zone where you’ll have to get loot or die trying. Gearbox Software's Creative Director Graeme Timmins joined the gang to offer some developer insights as well.

Arms Race is hosted by two fan-favorite former Vault Hunters turned ECHOcast commentators: Axton and Salvador! These Borderlands 2 bros host the galaxy's premier reality murder show and you're their next all-star contestant. The action takes place throughout the Stormblind Complex: an expansive, decommissioned DAHL military base set on a wintry island in a previously hidden corner of Pandora.