Well did some more searching and as far as I can tell, no OS yet, and the only OS is still for Heli use. If you look at the pictures you can not put a prop on this bad boy. The engine that's supposed to go to market has changed a little from the concept engine. The carburetor hangs out past the drive washer, but this is intended for Heli use.

Considering the GT22 is priced at 409.00 you would have to imagine this one being in the upper 300.00 price range.

http://translate.google.com/translat...jp%2F121213%2F

http://www.os-engines.co.jp/english/...newsgt15_e.pdf

The Evolution will more than likely a better choice for most modelers based on OS's pricing history.