There seems to be no Demo version that shows the new(ish) game off. only the plain version from several years ago has a demo version.
I stopped buying games that do not have a demo version. Most likely I'll forget about this games existence again soon, so I won't know when in several weeks or months a demo becomes available. I hope Ironclad/Stardock will think of me (and other customers like me) before they release a game next time.