Just announced earlier today:
Hopefully this'll be more far-reaching and inclusive than the 2015 ones, which, while fun, kind of defeated the point by just inviting in celebrity guests. And also using team-based games instead of individual competitions. But still, this could be neat. Wonder if we'll get any more debuts like at the last one (even though that last debut was Metroid Prime: Federation Force) or some other cool prize announcements.