Rumor: Rare is working on 2 games other than Sea of Thieves.

[Ljink96]

Even if a Banjo game is made, it won't be the same because some of the devs that made Banjo the game it was are now gone working on other projects that more closely resemble Banjo (i.e. Yooka Laylee). Be careful what you wish for...Nuts n Bolts...