This is the sixth set of Feng Zhu "concept" ships, commissioned for an unspecified Wing Commander title following the release of Secret Ops. These images' filenames classify them as freighters while their labels identify them as multiroles - supporting the earlier theory that multirole refers to Privateer-style spacecraft. Regardless, this is another set of clearly Kilrathi designs. It's also interesting to note that these ships are dated a month later than the unusual Confederation designs - August, 1998 rather than July (the same month this site went live!).
Thanks to Captain Johnny for both archiving and providing this material!