Thanks to Dane Solar, I discovered that Japanese costume-maker NyarolMyarroll ( NYALICE（にゃりす） ) is in the process of making a Krystal costume. At this time, all I've seen are the photos listed in this post. No idea if this is going to be a full suit or a partial suit. However, the shape and fur work on the head is very good. It will be interesting to see what Nyalice does with the eyes. I think they will have to be see-through, or use the tear-duct technique. I'll be following up with this one to find out what the costume will be and if it is being made for a commissioner or for Nyalice.

The posts about the costume are here, here, and here (I think).