Work in NS 7 is going on, check this page: http://wiki.nethserver.org/doku.php?id=developer:nethserver_7_packages
I would like to highlight a couple of issues found:
* httpd configuration has been completely refactored because CentOS 7 now ships with Apache 2.4, probably any web application will need some modification; see: https://github.com/NethServer/dev/issues/5012
* ownCloud 8 is HELL! I spent about 4 hours on it, I can make it work by hand, but automatic installation still have problems. Anyone want to continue the work? 
@alep