A few days ago, Amazon listed on its main website a placeholder product published by Bethesda Softworks for PlayStation 4, Xbox One, and PC.
The product, which seems to be Fallout-related, was listed to be available in standard, Deluxe, and Collector’s editions and was, also, accompanied by this video:
Having said this, it doesn’t seem likely to be a main game of the saga (Fallout 76 was launched last November), but if this is finally Fallout-related, it could perfectly be a remaster for Fallout 3 or Fallout: New Vegas.
Stay tuned.