Just caught on D&D Celebration that we will see two classic D&D settings updated for 5th edition in 2022 and a third setting in 2023. In 2024, to celebrate the 50th anniversary of the game, WOTC will release the 6th edition of D&D.
Also just heard that in 2022 we will see Mordenkainen Presents: Monsters of the Multiverse with 30 playable races This are playable races that have been released outside the core books and are world agnostic, that is, not tied to any particular world. Much as with Alternity, for those of you who remember that far back. this book will include concepts that will get incorporated into 6th edition.
Also in 2022, we will see a book with an alternate art cover featuring Boo the Miniature Giant Space Hampster so make of that what you will.