https://www.gamespot.com/articles/rage-2-trailer-coming-soon-bethesda-teases-update/1100-6458870/

Update 5: Sure enough Rage 2 is real. Bethesda has released an announcement trailer for the new game, with a gameplay trailer set to follow soon after. We don't know how much we'll be learning about the game, but a full reveal by the time of Bethesda's E3 2018 press conference seems like a fair bet.

Update 4: A trailer for a new Rage game is coming this Monday, apparently, while more teaser images popped up as well.