On Thursday morning at 7:07 a.m. PST, Bungie released a trailer for their Expansion for the Campaign of Halo 3.

Early Thursday morning, a trailer revealing appeared on the Xbox Live Marketplace and Bungie.net. It’s difficult to determine whether the trailer is an expansion of Halo 3, or a new game entirely. In the trailer, the Halo 3 logo is shown, as well as the words, “Prepare to Drop“.

On the Xbox Live Marketplace, the description reads:

“High action and deep mystery await players in the new Halo 3 campaign experience. Prepare to drop!”

Bungie had originally intended to make this announcement during E3 2008, but had their plans changed by their publisher Microsoft. Before changing, a mysterious counter had appeared on Bungie.net which was stopped, and then returned on Wednesday, Sep. 24th 2008.

Many speculated that this announcement could have been for the now confirmed “Mythic Map Pack“. According to Bungie.net, “We do have new maps still coming to Halo 3 but the release specifics are still being worked out with our partners.“