WildFly contains a JSF 2.2.x implementation based on Mojarra. Support for JSF 2.2 will be provided in an upcoming RichFaces 4.5 release. Note that RichFaces 5.0.0.Alpha3 is compatible with JSF 2.2 and can already be used with WildFly.
It's also possible to use a different JSF implementation with WildFly via the multi-JSF feature. With this, you could install a JSF 2.1.x implementation if you'd like to use RichFaces 4.3.x.
Moved to richfaces forum.
RichFaces 4.3 is our stable branch and is primarily targeting JBoss EAP. WildFly 8 / JSF 2.2 support was originally scheduled for RichFaces 5. We've since decided to focus on getting a 4.5 release of RichFaces out to address JSF 2.2 compatibility.
In terms of timing, RichFaces 4.5.0.Alpha3 will be a feature complete Alpha release; we are in the process of stabilizing it now with our QE team. I hope to have the 4.5.0.Alpha3 release staged by the end of next week. We'll follow that up with Betas as required to further stabilize the 4.5 branch and get a Final release out this summer.