Right now, you will lose Java support on all FireFox versions. If you do not use JSAM, than be happy cause PulseSecureApplicationLauncher will do the download and install of applications ( Windows TerminalService, Collaboration, maybe more )
Maybe Seamless Windows Terminal Services does not work, in my environment, it does not. So I fall back to 8.2R4.1 with HTML5 Session problems ;-(