E3 2015 is just around the corner (feels like CHRISTMAS!!!) and the good news is that Nintendo will be having their digital presentation on June 16th. And Mr. Miyamoto will be there, most likely talking on an upcoming Star Fox title, but I can't confirm that yet. The bad news is that the president of Nintendo will not be attending, last year he was ill, but this year it isn't due to illness that he will not be attending. This year Iwata won't be at E3 because he will be in Japan, attending to other matters which currently requires his attention.
Source: Nintendo Everything