Gamespot has coverage of the appearance on an official Korean Xbox site of a "Halo 2 X-Pack". The possible expansion is another possible way for Bungie and Microsoft to get the heavily foreshadowed ending to fans of the series. From the article: "Such a Halo 2 expansion could be a twofold boon for Microsoft, adding another incentive for gamers to join its online service and squeezing further dollars from the nearly 7 million gamers who already have Halo 2."