Read the full post above but a good snippet to show you should care about this if you haven’t started caring already.
“With the end of support Windows Server 2003 in July 2015, there will no longer be any technical requirement to keep FRS around. All supported OSes will happily replicate SYSVOL with DFSR. Thus ends the legacy. Whatever server operating system we ship after July 2015 may no longer include the FRS binaries. You will not be able to promote that OS to be a domain controller in a domain that is still running FRS for SYSVOL, thereby blocking upgrades until you migrate to DFSR.
This is not an assurance that we are removing FRS from the next version of Windows Server. Some OS we release after July 2015 will not have FRS. Just plan for the inside timeline and you cannot go wrong - migrate to DFSR before end of Windows Server 2003 support. “