How can Emily's tidbit that a reveal of Mario coinciding with the unveiling of the NX be true, when Miyamoto has already gone on record and said that we will NOT see a next gen Mario until E3 2017 (and then...it's still a MAYBE that the game will be ready for next year's E3)?
Miyamoto even explicitly says next gen Mario's reveal will be "in about a year or two"....and this quote was from June of this year.
http://au.ign.com/articles/2016/06/16/e3-2016-nintendo-a-new-kind-of-mario-is-coming
Because meaningless PR interviews are just that: meaningless PR interviews. He might as well have twisted the truth a bit to make an earlier reveal surprising, there's no way to tell. People really shouldn't take interviews at face value.