The latest featured article at Bungie.net is all about the upcoming expansion map, Terminal. The map is based on the New Mombassa area from the campaign and features a runaway maglev train designed to complicate matters on a regular basis. But hey, at least the trains run on time.
We've seen this set of rumors, supposedly coming from someone whose uncle works at Bungie (oh dear God not again--Ed.) several times in the past few days. They were even translated into French at Halo.fr.
Given that Bungie seems to be enduring some kind of self-imposed silence bordering on self-denial with regards to the very existence of Halo 3, even to the point of failing to confirm or deny the existence of the game after it was referred to by no less a personage than Microsoft chairman Bill Gates.
That, plus the fact that historically Bungie, like other game studios, usually doesn't comment on rumors, means that regardless of the particular situation right now, these rumors would no doubt spread unchecked anyway.
The MIDI is 4:42 long, and contains the opening sequence to both Outskirts and the 2003 E3 demo, as well as Earth City from the Halo 2 soundtrack. Also included are the Printmusic files of all the parts, as well as a score, and a PDF document that has all of the parts and the score, more than 45 pages of material all told in this .zip archive.