In a post to Twitter and a post made to their official website on Nov. 20, Gearbox officially revealed Borderlands 3s first DLC pack to be Moxxis Heist of the Handsome Jackpot, which sees players tasked with breaking into and looting a casino owned by the late, great series antagonist Handsome Jack.
Source: N4G PC Gearbox Reveals Moxxi's Heist of the Handsome Jackpot DLC for Borderlands 3