Alright, I'll do the research instead of lazywebbing it.
Looks like it's a pin collection. Oddly it says secret pins, so is there going to be more than one? I thought they were just coyly hinting that it'd have the next Sentai series logo. Oh yeah, that must be the case. Deadline is December 14. Ships next March
Rereading it, there's only 37 types. Considering the 36 Sentai teams are already known, it couldn't be "secret pins". Must be an English screw up on the Japanese part.