SharePoint 2013 with SP1 ("slipstream") is now available for download: http://blogs.technet.com/b/stefan_gossner/archive/2014/02/28/sharepoint-2013-with-sp1-quot-slipstream-quot-is-now-available-for-download.aspx
You can now download SharePoint 2013 with SP1 from MSDN and VLSC and MPN.
