At the moment we use MyFaces/Tomahawk and ICEFaces for JSF in portlets, and I'd like to add Seam.
This was tricky before because of non-standard JSF portlet bridges (such as for Tomahawk) and an ill-defined lifecycle mapping.
With JSF1.2 and a standard JSF bridge slowly coming together, does anyone know if this scenario will be supported soon?
Even if JSR301 is not a formal part of Java EE 6, surely as the spec crystallizes it can be supported by Seam if JSF1.2 is used, with additional kit like Facelets where needed?
The portal team have recently been working on Seam/Portal integration - see http://blog.jboss-portal.org/2007/11/seam-20-portlet-example.html
I think its still early days, but looking hopeful :)