Bungie conferma i rumors che circolavano in rete in merito a un nuovo aggiornamento di Halo 3. L'aggiornamento dovrebbe portare il gioco alla versione 1.2 e sarà incentrato quasi unicamente sugli obiettivi di gioco, ovviamente oltre le nuove correzioni del caso dei bug in modalità multiplayer.
Si tratta dunque di nuovi Acievements per
Halo 3 e i più curiosi possono dare un'occhiata a una prima lista (non ancora completa) qui di seguito:

- Vidmaster Challenge: Lightswitch (0 points) – Get to the rank of Lieutenant in any playlist in the new EXP progression system.
- Vidmaster Challenge: 7 on 7 (0 points) – Enter into any ranked or social playlist with 7 EXP on the 7th of the month.
- Vidmaster Challenge: Annual (0 points) – After 9/25/08, complete Halo on 4-player Legendary LIVE co-op, with Iron, and everyone in Ghosts.
- Double Double (25 points) – On a Legendary map, get two Double Kills during any ranked or social match.
- Poor Yorick (25 points) – On a Legendary map, get 3 Oddball melee kills during any ranked or social match.
- Came…From…Behind (50 points) – On a Legendary map, get 3 assassinations during any ranked or social match.
- Defend This (50 points) – On a Legendary map, get a flag melee kill during any ranked or social match.
- Flag Dropped (25 points) – On a Legendary map, get 2 flag carrier kills during any ranked or social match.
- Road Rage (25 points) – On a Legendary map, get 5 Warthog chaingun kills during any ranked or social match.
- Look Both Ways (50 points) – On a Legendary map, get a Splatter Spree during any ranked or social match.