https://www.gamespot.com/articles/e3-2018-halo-infinite-returns-to-the-franchises-ro/1100-6459829/

Halo Infinite was announced during the Xbox E3 2018 briefing by way of a game engine tech demo, not a reveal of the game itself. We still don't know what that looks like or what it really is. But now, Xbox marketing boss Aaron Greenberg has commented further on the title, telling GameSpot that it will return to the franchise's "core roots." It remains to be seen exactly what that means, but the brief look at Master Chief's helmet from the engine tech trailer is meant to be evocative of the classic vibe.

That's all Greenberg had to say on the matter of Halo Infinite returning to the franchise's roots. But he did say that he's eager to see the team at 343 Industries do something more ambitious than a straightforward sequel called Halo 6. "I'm personally excited that it's not just Halo 6. This is a bigger, bolder, more ambitious title," Greenberg said. In 2014, Halo boss Bonnie Ross said we may never see a Halo 6 because 343 wanted to move away from numbered entries. Now, that's happened.