Topic: http://www.yamahasynth.com/products/stage_pianos
http://www.yamahasynth.com/products/stage_pianos
However, it doesn't look as if they are graded hammer actions!
The only model that does have graded hammer is the cheapest model (CP50) but this is not a natural wood action but but a GH (GHE) action which is the same action as the one I have replaced with the NL2 action on the 'modding P120 Stage Piano' thread.
It seems that the only way to get a graded hammer wooden action stage piano is to do what I have done! Bear in mind that Yamaha have put the CP's on the 'Yamaha Synth' website, not the Yamaha Musical Instrument site, hence the weighted action synth type feel! Obviously, those who want an authentic piano feel will require graded hammer. I would therefore recommend either the high end CVP's / CVP's, or buy the NL2 Natural Wood action which is graded and build it into either a present yamaha stage piano or purchase something like a CP33, P155 or P85 and instal it in that.