The Jabber iOS 9.6 release has not hit FCS so any builds you have are protected under an NDA and cannot be discussed here; that's why Jaime also cannot comment. The early release programs require you to be enrolled in TestFlight and your device UUID is embedded directly in the code (i.e. whitelisted). So, this would mean you should have an open line of communication with the BU or an EAP team that you could post this question to.
Speaking generically, and not making statements as to what will or won't be in the 9.6.0 build, the remote access solution for Jabber clients is Collaboration Edge, based on Cisco Expressway. This is the logical equivalent to a Lync Edge pool, though their actual functionality and architecture may differ slightly.
