User blog comment:IcyDevil34/Next Key LRIGs?/@comment-35126423-20180920070419/@comment-35126423-20181229035725

The mystery LRIG is a collab LRIG though. Its been confirmed to be revealed at the end of january as a note.

As mentioned before however WXK07 also introduces three new LRIGs so thats probably where hopes should lie. Personally i'd like key Milulun.