Snowdrop Angelic Blessing?

This message appeared when I tried equipping my DABR with the WABR from Hot Time.

Says on the list, along with the 3 that we know of: "Snowdrop Angelic Blessing."

Is this a future ring that we'll be getting, perhaps? I've certainly never heard of it.

Snowdrop appears to have been a winter event that we didn't get. There are boxes and an event coin and such.

Source

And it expires.