User blog comment:- MHCaboose -/Monster Hunter Frontier Z Zenith Discussion/@comment-26421638-20180706131439

Tonfas were introduced in Frontier GG (G Genuine) and now "Magnet Spikes" will be introduced in Frontier ZZ (Z Zenith), both of these were double letters.

So, I guess that this should be a major update but do we have some infos about it?