The official launch of Super Smash Bros. for 3DS is a little over a month away, and some very daring mystery men have been upping the intensity of their Fiend's Scale with appear to be leaks from the upcoming handheld version of the game, including a shot of the full roster. They're even bringing out the shakycam video showcasing as-of-yet-unannounced characters like Bowser Jr. and Ganondorf.
More leaked images also suggest the return of old hands like Wario (as rumored earlier), as well as more newcomers like the freakin' Dog from Duck Hunt and Shulk from Xenoblade Chronicles. Seriously, Shulk has been a rumored character since forever.
These purported leaks certainly count as spoilers, and Nintendo usually doesn't take very kindly to them as demonstrated by their friendly visit to an Instagram leaker during the Pokemon X and Y launch. For the time being however, Nintendo will only say that it has nothing else to announce at this time, oh and please visit the Smash Bros. site for the currently known roster of characters.
Update: Leaked videos have since been removed from YouTube.