There have now been multiple sites reporting on the same rumor, so here goes nothing. Allegedly, Nintendo is going to show off some "new hardware" at E3 2014 (that's this year).

Now, this could literally mean anything from a new console, to a new gimmicky device (looking at you Vitality Sensor), to a new handheld, to a new update to an existing piece of hardware (XS3DSXL), to a new controller, to anything in between.

This originally started when IGN kind of hinted that Nintendo might reveal some new hardware at E3. The problem is, and this is why IGN did not run a story on it themselves, is that they don't entirely trust their sources on this one. It was said that "we've heard rumors that Nintendo might be showing hardware at E3" during the latest Nintendo Voice Chat.

However, Videogamer.com has come forward to also say that their own sources have said the same thing that the untrusted IGN sources said.
Games compatible with the hardware will also be playable at the show, our source says, with the hardware believed to be linked to system specs leaked earlier in the year.

Those specs suggest that the hardware will be formed of two parts - a 'Fusion DS' and a 'Fusion Terminal' - and be a successor to the platform holder's struggling Wii U.

Our source's comments tally with those made by IGN earlier today who revealed that they had "heard rumours that Nintendo might be showing hardware at E3".

"They are absolutely going to show new hardware this year, there is no doubt in my mind..." said IGN's Peer Schneider. "I've heard it from multiple people now. I've heard it from someone who used to be at Nintendo, I've heard it from somebody on the third-party front."

Nintendo is slated to hold their digital E3 event on June 10. I suppose we'll see then if any of these completely left field rumors are true or not.