By the end of this month or the beggining of february, before TPHD so that it can be (more) hyped.
Edit:I sincerely hope to see Genei, maybe(wishful thinking) Zelda U, and new announcements!
My (locked) thread about how difficulty should be a decision for the developers, not the gamers.
https://gamrconnect.vgchartz.com/thread.php?id=241866&page=1