I'm actually trying to get to the point where I've got a Seam 2 demo with Icefaces 3 and Icemobile working. However, they need JSF 2, and so I thought I'd go for a Seam 2.3 build. I couldn't even get anywhere near looking at Icefaces, because a simple Seam 2.3 project created by JBoss Tools would not deploy to AS7.1.1.Final, with the problems at these links:
Does anyone know of a workaround or solution to this problem?
Also, the seam-gen for 2.3 is documented as being broken at the moment, regarding Hibernate jars, so does anyone know how to get Seam 2.2.2.Final up and going with JSF 2, so I can try out Icefaces 3?
JBoss Tools should support Seam 2.3.Final but it's not released yet. You can try a nightly build from http://hudson.jboss.org/hudson/job/Seam-2.3.X-nightly/ so far.
Regarding your question about Seam 2.2 + JSF2 it's better to ask Seam comunity https://community.jboss.org/en/seam/seam2