Halo Studios, formerly known as 343 Industries, is working on several Halo franchise titles at once.
At the beginning of the year, it became known that the developers were busy creating a full-fledged sequel to the series, but apparently there are many more new items on the list of tasks. Perhaps we are talking about spin-offs that will tell the stories of new characters. There are no specific details about the games yet, so we are waiting for official announcements.
The studio clarified that all new Halo games are created on the Unreal Engine 5.