https://www.gamespot.com/articles/e3-2018-halo-infinite-which-isnt-really-a-game-yet/1100-6459688/

343 Industries has shared more details on the recently announced Halo: Infinite, which right now seems like it's more of an idea than a game. In a blog post, studio head Chris Lee said the game will focus on Master Chief and his saga. This is good news, as Halo 5: Guardians moved away from Master Chief somewhat with a story that split its time between Chief and Agent Locke.

Lee said the team at 343 is well aware of the feedback that Halo 5 strayed too far from Master Chief. "The team also heard feedback loud and clear on the amount of time spent playing as the Master Chief in Halo 5," Lee explained. "In Halo Infinite, the game will focus on the Master Chief and continue his saga after the events of Halo 5."