By the end of 2020 we should be able to get our hands on Xbox Series X, but for the titles made exclusively for this console we will have to wait at least a year. In the course of an interview, the head of Xbox Game Studios Matt Booty has in fact declared that all the titles that will come out in the next two years will be cross-gen:
With the release of our content over the course of the next year or two, all of our games will be available on both PC and Xbox Series X. We need to make sure we're keeping the quality bar high and launching Xbox exclusives to be. proud and that fans can be proud of. And finally, we must continue to build characters, stories and worlds that can transcend generations, devices and platforms.
In addition, Booty said that Microsoft, after the release of the console, will choose exclusives that can truly show the potential of the next-gen console. Among these, there will certainly be Halo.