The next Borderlands game will be revealed this month
https://www.pcgamer.com/the-next-borderlands-game-will-be-revealed-this-month/
The Borderlands 3 hype intensified today with a tweet from developer Gearbox that very strongly suggests the game will be unveiled at PAX East.
March 28 is day one of PAX East, which takes place in Boston, MA. The image in the tweet is very clearly done in the distinctive Borderlands art style, and the "Exit 3" topper is a nice touch. It's not official, but if Gearbox doesn't come across with the good this time around, I suspect there will be riots—or at least a lot of crappy comments on Reddit.