Let me answers these questions for you :-)
The RichFaces project is backed by Red Hat/JBoss and is developed in a partnership with Exadel ( the original creator ). The RichFaces project team members are spread across these two companies, and span the globe.
I don't think I need to explain the commitment and track record that Red Hat/JBoss have in the open source ecosystem. We are committed to both the RichFaces project and JSF. We have 4 people in total on the JSF Expert Group ( 2 Red Hat, 2 Exadel ).
The project itself is as "open" a project as you will likely find with public team meetings, and minutes, open development forums, and a very large community ( one of the largest at JBoss ). We also want to make it even easy for people to help out and join in on the development RichFaces in the 4.0 release.
As for support/SLA for RichFaces only - I'll need to refer you to the sales team for the final answer, but we do not currently offer enterprise support for RichFaces standalone. I would encourage you to check out some of our offerings such as JBoss Enterprise Web Server (tomcat, apache), and the JBoss Web Framework Kit (RichFaces support for EWS). These two together would provide you a fully supported apache, tomcat, RichFaces platform.
Hope this helped, and thanks,