This is from Gamer.tm again, following on from an earlier rumour of a European 360 price cut to be announced next week. The site's claiming to have been told by an "industry insider" that a Bungie game's going to be revealed at the same event during the week of September 22.
A new Rare game's going to be seen as well, apparently. We would suggest taking this one with a rather large pinch of salt. Draw your own conclusions. Full thing through the link.