I could be wrong but I think they were referring to the red chess like pieces.  They were the badges given instead of the standard ones.  Though the way things were worded was misleading.  It did seam like there would be an extra and separate "special" badge that was separate from the ones given for the OP or challenge.

Hello!

We apologize for the wait on the special badge, but we're working on getting it awarded to everyone that earned it.
Thank you for your patience.
^LM