It's about the client, once you register to beta yo will get a release notes, here's the information from the release notes
System requirements
Symantec Endpoint Protection includes the following additional support:
Operating system support:
■ Red Hat Enterprise Linux (RHEL) 7.0
Browser support:
■ Microsoft Internet Explorer 10.2, 11
■ Mozilla Firefox 5.x through 33.1.1
■ Google Chrome through 38.0.2125.122