When will Endpoint Protection SBE 2013 be ready for Windows Server 2012 Essentials?
It shows it is supported for Windows Server 2012 but doesn't go into more specifics. Have you tried installing?
SEP Knowledge Base
No, I didn't, I have SEP 12.1 installed and have to remove it first.
You may want to call symantec to quickly confirm
I did, but they don't know. I only got flimsy answers (like Vicky Pollard in Little Britain: yeah but no but yeah but no ....)
Windows server 2012 Essentials and Standard are both supported on SEP SBE 2013. A full list of system requirements can be found here: http://consolehelp.symanteccloud.com/Home.aspx/default?localeID=en-US&prodID=SCLD