Countdown on Bungie.net points to big reveal.

Halo 3 screenshot

A new countdown has appeared on Halo developer Bungie's website, which suggests the studio's much teased new game will be revealed just after 3pm UK time.

Bungie has been teasing its fans all week with a number of cryptic updates. Everything so far points to a Halo-related reveal, given that the tease posts have been headed 'UNSC OFFICE OF NAVAL INTELLIGENCE', which directly links with the Halo universe (the UNSC are the good guys in the battle against the Covenant).

So, not long to wait then. Let the speculation begin? What's Bungie got up its sleeve?