Got it, tried it. As usual with Topaz its not ready for prime time, but as usual with Topaz watch for many updates over the next month as users debug it for them.
On my Win10 system:
Bug1: Run the Photoshop plugin once and you can't run it again without closing and relaunching Photoshop.
Bug2: Can't save a trimap, can't load old trimaps made by Remask 5. It does offer a save/trimap after you compute mask, but that save goes into the bit bucket (can't find it anywhere) and the program exits with nothing passed back to Photoshop.
Bug3: Can't adjust brush size with keyboard [ ] shortcuts UNTIL you tick the slider once. Then keyboard keys work.
Bug4: Can't zoom with keyboard shortcut crtl+, but strangely you can shrink with keyboard ctrl-. So, no way to zoom more than 100%
Quick comparison - it is a little better in a few places, but much worse in many places. Most bothersome, it leaves a distinct halo around clean hard edges.