https://wccftech.com/halo-infinite-roadmap-confirms-another-six-months-for-season-2/

Yesterday, Halo Infinite developer 343 Industries shared the updated roadmap for the game's free-to-play live service multiplayer. Season 2, 'Lone Wolves,' is set to begin on May 3rd and will last for over six months, ending on November 7th just ahead of the beginning of Season 3.

On the upside, the arrival of the campaign network co-op has been confirmed for late August (alongside the ability to replay campaign missions), while the Forge mode has been brought forward to September with an Open Beta release.