There's good news and bad news about Metal Slug 7 on Xbox Live Arcade. The bad news is that we're pretty sure it's not coming out. The good news is that Metal Slug XX, the upgraded, multiplayer-capable PSP remix of the DS game, is replacing it in SNK's 2010 lineup. SNK also announced XBLA ports of two of its fighting games: King of Fighters 2002 Ultimate Match and Neo Geo Battle Coliseum. All three will join the weird King of Fighters shooting game, The King of Fighters Sky Stage, on XBLA in spring 2010.
These games have, so far, been announced only for Japan, but we are sure SNK will release them all worldwide -- if only because it would be a waste of effort to develop an XBLA title just for the few people in Japan who would buy it.