Microsoft has released updates and downloads for Lync Server 2013.
They are the excellent Planning Tool http://www.microsoft.com/en-us/download/details.aspx?id=36823, the unmissable Resource Kit tools http://www.microsoft.com/en-us/download/details.aspx?id=36821 and CU1 For Lync 2013 with some interesting added functionality http://www.microsoft.com/en-us/download/details.aspx?id=36820. Also amongst the downloads are the client SDK http://www.microsoft.com/en-us/download/details.aspx?id=36824 and the whiteboard archiving viewer http://www.microsoft.com/en-us/download/details.aspx?id=36822.