Below you can find an updated calendar of the playlists rotating in and out of Halo 5 (taken from Waypoint).
March
- March 4: Spring 2021 Arena Season begins
- March 4 – Ranked Snipers goes live for the season
- March 11 – Triple Team rotates in for Castle Wars
- March 11 – Warzone Assault goes live for the weekend
- March 18 – Core Play rotates in for Triple Team
- March 25 – Forerunner Slayer rotates in for Core Play
- March 25 – Warzone Turbo goes live for the weekend
April
- April 1 – Rock ‘n’ Rail rotates in for Forerunner Slayer
- April 8 – ODST Slayer rotates in for Rock ‘n’ Rail
- April 15 – Roaming King rotates in for ODST Slayer
- April 15 – Warzone Assault goes live for the weekend
- April 22 – Grifball rotates in for ODST Slayer
- April 22 – Community Slayer rotates in for Grifball
- April 29 – Warzone Turbo goes live for the weekend
