User blog comment:DerpyDoodle/Upcoming Reveal Trailers!/@comment-5623885-20141023173618/@comment-32390199-20141023195153

I think if he just announced that there will be DLC in the form of characters that everyone will freak out. And then we can speculate again!

Or maybe he says there will be newcomers on the Wii U version that can be transferred/downloaded on the 3DS.