User blog comment:Jkphantom9/News from Anime Expo/@comment-27144409-20170703224238/@comment-5717877-20170703224834

Also, when I got my Blu Ray copy of Volume 4, I noticed that Ruby's character short wasn't included in the extras...

I was kind of disappointed, but with this announcement, maybe RT is saving Ruby's short to be grouped with Weiss', Blake's, and Yang's when the Volume 5 Blu Ray comes out