But Is It Super Smash Bros?
A mysterious Namco Bandai teaser site has bubbled to the surface of the internet, promising to reveal an "all star battle" in two days' time. A mysterious selection of pictures are gradually surfacing, including a Nautilus, an aquarium and dried dates - read into it what you will.
Since Namco Bandai are co-developing the next Super Smash Bros. title, we initially reckoned that this site could mark the first official reveal... but the more we think about it, the less likely it sounds. Super Smash Bros seemed to be in very early development according to the initial announcement, and it's likely that Nintendo would want to deal with most of the promotion in-house.
Either way, we'll find out on Thursday.