First off, posting leaks or spoilers is against the rules. Second, this was confirmed false. It was a troll by 343i because they knew people would read the "script".
Trio of Kings
Marine - Onyx
Made your first hot drop into HaloWaypoint.com
Halo 5: Guardians MP Beta participant.
Contributed to the collective knowledge of the Domain
Become a member of an active Spartan Company.