Rumored Borderlands 2 DLC Info Leaked?

Here's another pre-E3 rumor, for your mongering pleasure. ResetEra has a screenshot of a now-removed listing for the rumored Borderlands 2 DLC called Commander Lilith & The Fight For Sanctuary that's to bridge the gap to the upcoming release of Borderlands 3 (thanks Polygon). This points to a gallery of screenshots that were captured before this listing disappeared. They say this will be free, and offer the following description:
Return to the award winning shooter-looter for a new adventure that sets the stage for the upcoming Borderlands 3. Sanctuary is under siege, the Vault's map has been stolen and a toxic gas is poisoning Pandora. Fight new bosses, explore new zones, get new loot (including an entirely new tier beyond Legendary) and join up with Lilith and the Crimson Raiders to take on a deranged villain hell-bent on ruling the planet

Returning players can pursue an increased level cap of 80, while newcomers can automatically boost to level 30 and dive straight into the action.