The candidate release 2 of Teiid 8.13 with WildFly is now released. The target version of WildFly is 9.0.2.Final, which is latest stable release by the WildFly team. You can download it from http://teiid.jboss.org/downloads/
This version removed the "embedded" and includes various fixes/enhancements that are going on in 8.12.x series. All those issues are forward merged into this release.
We can consider CR2 version is pretty close to the final version to be released in a week. If you have not tested your Teiid usecase, test it right away and let us know of any issues you see.