It appears Creative Director Tim Longo for Halo Infinite has left 343i in part of a leadership shakeup. According to a report from Kotaku, Executive Producer Mary Olson took over the campaign’s development a few weeks ago. Kotaku reached out to Microsoft to confirm Longo’s departure and a spokesperson said the following:
Roles and responsibilities of various team members regularly evolve to meet the needs of a game, throughout development. We have recently had two changes to the Halo Infinite development team. Our Executive Producer, Mary Olson will now take charge of the Campaign team on Halo Infinite as the Lead Producer, utilizing her many years of experience at 343 Industries to help craft a great campaign for fans. Additionally, Tim Longo has recently departed our team and we are truly thankful for his many contributions to our games, our studio, and the Halo universe… The overall creative vision and production of the game… led by Chris Lee, Studio Head of Halo Infinite… These changes have no impact to the release date for Halo Infinite.
Halo Infinite is scheduled to release holiday 2021 alongside Xbox Game Pass and the new Xbox Scarlett.