When the Symantec 11.0.7 mp4 version will release?
There is no officially announced for SEP 11.7 MP4 relased.
Recently 12.1 RU3 has been relase on 6-6-2013.
You can choose this one if you want to update. Because there a lot of feature availble in 12.1 RU3
Upgrading or migrating to Symantec Endpoint Protection 12.1.3 (RU3)
11.x will End of Support Life 2014-09-27
What are the Symantec Endpoint Protection (SEP) versions released officially?
No date has been announced for RU7 MP4.
You can setup email alerts when a new version is released
keep watching on the information forum.
Help Link: http://www.symantec.com/business/support/overview.jsp?pid=54619