An easter egg found in "Battleborn" DLC has offered some interesting details for "Borderlands 3".
Borderlands 3 Update March 7, 2017
If latest reports are to be believed, a “Borderlands 3” reveal could be a few weeks away and it may happen during the Gearbox PAX East panel. The description panel of the PAX East website revealed the information, though it has been taken down now.
Borderlands 3 Update February 23, 2017