JBOSS, Wldfly , and Websphere are the possible web application pre-reqs for Identity Manager.
JBOSS 7.1 one came out recently, but the only version we support right now is Jboss 6.4 EAP or later 6.x releases.
When will JBOSS 7.1 be supported for Identity Manager ?
No version (R14.0, R14.1 or R14.2) support JBOSS 7.1
The new version R14.3, which will come out EOY 2018, will also not support JBOSS 7.1.
It has been pushed back to R14.4, which should come out in Spring of 2019.