I'm not sure about the current status of wml renderkit of myfaces but you have mobilesfaces as an option too:
http://www.ericsson.com/mobilityworld/sub/open/technologies/open_development_tips/tools/mobilefaces_src_code_lib 2008/9/27 Dave <[EMAIL PROTECTED]> > Hello, I am using JSF myfaces. I got requirement to extend our current JSF > app to mobile device such cell phone. Does JSF support WAP/WML? is there > any tools? Thanks for advice. > > Dave > > -- Regards, Rogério (_rogerio_) [Blog: http://faces.eti.br] [Sandbox: http://bmobile.dyndns.org] [Twitter: http://twitter.com/ararog] "Faça a diferença! Ajude o seu país a crescer, não retenha conhecimento, distribua e aprenda mais." (http://faces.eti.br/2006/10/30/conhecimento-e-amadurecimento)

