Bungie announces Halo 3, the third and final game in the Halo Trilogy. Halo 3 will be released for Microsoft's Xbox 360 in 2007.
The game was revealed to the world at the Microsoft press conference at Grauman's Chinese Theater, in Hollywood, CA. By the time you read this, the announcement trailer should be available for download on bungie.net and directly to your Xbox 360, in full HD glory from Xbox Live Marketplace. Read no further if you want to avoid spoilers.

Nobody saw it coming. Halo 3! Who knew? For the last year or two, people have speculated about what our next project was and surprisingly, in all that time, not a single person guessed that it would be Halo 3. Not one.

We declare it the best kept secret ever.

...