Topic: Xbox.com Listing Suggests 6 Player Online Co-Op For Resident Evil 6
An Xbox.com listing for Resident Evil 6 suggests the game will feature a six player online co-op mode. Whether this mode is the campaign or something extra remains to be seen. Listings on Xbox.com do come direct from a publisher submitted form, so this reveal would suggest the feature is more or less official.
Speculation would put a six player online co-op mode as an extension of the popular Mercenaries mode which was found in Resident Evil 5 as well as some of the portable titles.