User blog comment:Kogath/Monster Hunter X Discussion/@comment-19936604-20150601073236/@comment-25275196-20150602121611

Depends on wether this is a freedom unite to 4, or if is the start of 5th gen, if the former, then most likely yes to G-Rank, not sure about frenzy though, maybe, since many 4th gen areas are returning.

but if this is first 5th gen game, then there's next to no chance of G-Rank; the original didn't have it, dos didn't have it, tri didn't have it, and 4 didn't have it, and as for frenzy, most likely no, because it was 4s gimmick along with verticality, and verticality is still a thing, as shown by 4th gen areas in the new game. So probably not.