DVant Miniatures are having a public beta test of their RUMA rules system.
From their announcement:
The team at DV-ant Miniatures would like to welcome all TGN readers to participate in our beta test of RUMA: Faith and War. You can download the Beta Test documents and please sign up to the forums to make your thoughts known.
And on a personal note, please break our game. Show us our flaws, so that we can put out the best game possible.