DFS from 2003 R2 SP2 to 2012 R2

Found that we have DFS on windows server 2003 R2 SP2.  We have AD windows 2008 R2 SP1.   I am thinking of building 2012 R2 servers and install the DFS functions. Can I add the 2012 servers to the namespace servers on the 2003 side?  Should I be able to shutdown the 2003 servers after that and the \\domainname\Group still work when I type it in the windows explorer?