https://wccftech.com/halo-infinite-new-adventure-xbox-one-pc/

Redmond-based team 343 Industries revealed a new game during the Xbox E3 2018 briefing, Halo Infinite. However, not only it didn’t have a date or a year (unlike Gears 5, which was confirmed to be coming in 2019 despite launching one full year later after Halo 5), platforms weren’t listed either.

This, coupled with the new SlipSpace engine demo being front and center of 343i’s own statement on Halo Waypoint as well as their admission that there’s a still long way to go before shipping Halo Infinite, fueled speculation that the game would actually launch with the next generation of consoles.