User blog comment:Kogath/Monster Hunter Generations Discussion/@comment-6050823-20161024111959/@comment-2194133-20161024140148

It's on the official website: https://www.nintendo.co.jp/nintendo_direct/20161027/index.html

Translated the Japanese text says that this is not about new info on the Switch or smartphone apps.

Honestly though, I'm sure the Switch will get something MH at some point even if it is a port of whatever this game is with an announcement a bit later in the year or early next year. The fact that MH merits its own Direct shows that Nintendo is holding onto the series tightly and is not planning on letting go for a while. It would be silly to not have a Switch title if that is the case.