Bungie announcement... teaser trailers UP!

[TRios_Zen]

Speculation on B-Net suggest that this might be a game where you play an ODST marine in between the falling of New Mambosa, and the return of the Master Chief. Evidence to those theories, is pretty strong I would think.

For those, not fanatical about Halo: http://halo.wikia.com/wiki/ODST