User blog comment:Kogath/Monster Hunter X Discussion/@comment-2194133-20151109040353/@comment-5716529-20151109150819

Yep, I've never said they showed em all off in trailers, but they were showed close to game release, maybe for the exception of Amatsu. But you can pretty much tell, with the size and wacky desing of the monster, it is the final boss.