Short answer is: no. 
NethServer will not be a full AD replacement unless Red Hat will follow this path in the future.
If you refer to integration with Active Directory, we already have it: http://docs.nethserver.org/en/v6.6/samba.html#active-directory-member
But we have plans to expand it:
Samba 3 EOL , move to 4?
See also: Why not Samba4/AD on NethServer?
Feel free to ask!