Last week, Capcom confirmed the sprite-based side scrolling sequel would arrive as a downloadable WiiWare title, and is being developed by Mega Man Zero and ZX veterans Inti Creates.
Ars claims that Capcom's E3 roster lists PlayStation 3 and Xbox 360 editions, but curiously, does not mention the Wii. The site chalks up the Wii exclusion to Nintendo Power's recent revelation, though it is also possible that the platform text is placeholder.
When reached for comment, a Capcom representative told Shacknews that the company "has not officially announced our complete E3 lineup at this time," and added that "Mega Man 9 is one of the best, most challenging games you'll ever play!"
If the title really does come out on all three systems, Mega Man 9 will be the first game to hit all three online marketplaces. Capcom's recent PC support indicates a PC version is feasible as well, though the company has yet to make an official statement.