According to an insider source for Thurrott, Halo Infinite will be releasing in 2019. However, this will only see the launch of the single-player mode continuing the events of Halo 5 with multiplayer releasing at a later date. This could mean that we would have to wait until 2020.
While this is still using an anonymous source, this is the same person who leaked the title of Halo Infinite and the announcement at E3. It’s still entirely possible that Microsoft could change their minds and release them simultaneously.
In this article:343 Industries, E3 2018, Halo Infinite, Microsoft, Rumor