There appears to be a new Halo in development, based on a job posting from Microsoft.
It is a job offer as a producer, which can be seen from February 6 on the Microsoft website, and which reveals that the developer of Halo, 343 Industries, is working on a new installment of the saga. The offer says “343 is looking for a producer to help develop a new project in the Halo universe,” which presumably indicates that the new employee will not be dedicated to Halo Infinite.
The job offer calls for experience developing triple-A games in the current generation, which eliminates any idea that it is something other than a game. But there is no more data, or what genre it would be, or when it would arrive.
At the moment the only thing we know is that there is a lot of talk about Halo Wars 3, in fact, an article in the VG24 / 7 of November last year said that the existence of the new installment had already been suggested on Twitter.
For now, we are waiting for Halo Infinite; at least until we have more news.