The wording in the patch 3.5 minisite makes me wonder if the gear, and possibly the mounts, are actually a permanent additions to the game, rather than a limited time event.

Quote Originally Posted by Patch 3.5 Minisite
New PvP gear inspired by the hit Japanese TV show: Garo! Designed by legendary character designer Keita Amemiya, these new mounts and gear are sure to bring a smile to the face of any Garo fan.
Source: http://na.finalfantasyxiv.com/pr/spe..._Edge_Of_Fate/