From this morning (Feb 19 2020)
" We’re coming to PAX East with some big announcements, including the reveal of Borderlands 3’s second campaign DLC!
Watch live at http://twitch.tv/borderlands Thursday, Feb 27 at 2:30pm ET / 11:30am PT!"
And I’m betting (I’ll even lay odds) that we get another level cap increase with this. Would be a little odd to give us a new campaign to just play at lvl 53.