Lenovo clarifies recent promotional image: No Halo 5 PC port. A Lenovo Legion Go S advertisement mistakenly depicted Halo 5: Guardians as coming to Steam; this was confirmed to be a design error, not a leak.
This leaves Halo 5 as the sole mainline Halo title absent from PC, a notable omission given the PC release of Halo: The Master Chief Collection and even the standalone Halo 5 Forge editor in 2016. While numerous rumors have circulated over the years, none have materialized. Lenovo's swift denial of the promotional image as a legitimate leak further dampens hopes for an imminent release.
Despite the debunking, the possibility of a future PC port remains. Microsoft's increased focus on the PC gaming market suggests a potential future release isn't entirely out of the question. However, currently, there's no official confirmation or concrete evidence to support this speculation.
The future of the Halo franchise is also uncertain. While Halo Infinite receives ongoing updates, community demand for new entries is growing. Speculation abounds regarding a potential Combat Evolved remake and even a surprising cross-platform move to PlayStation for The Master Chief Collection, though neither is currently confirmed.