From PSU: “A brand new, free Borderlands 2 DLC has just been revealed at E3 2019. Titled Commander Lilith & The Fight For Sanctuary, Gearbox has confirmed that you can download it for free right now.
This DLC aims to bridge the narrative gap between Borderlands 2 and the upcoming Borderlands 3. The news was confirmed during Microsofts press conference today.”
Source: N4G PC Borderlands 2: Commander Lilith & The Fight For Sanctuary DLC Available Now