Soundwave on 16 June 2015
Besides this E3 is not that important to Nintendo honestly.
If it was really important, Iwata would've flown to LA, but he's not coming this year because there's no new hardware being unveiled. This is just wrapping up the Wii U/3DS era, which quite frankly has been very disappointing for them (in a market sales sense), so they probably can't wait for it to be over.
Iwata will be here in LA next year when they unveil the NX. That's much more important to Nintendo.
