These updates for Lync 2013 include many basic quality improvements since the initial release of Lync 2013.
Note: These updates only affect the Lync 2013 Desktop client. The Lync 2013 Virtual Desktop Infrastructure (VDI) client is not affected and will be updated at a later date. We do not recommend that you install these updates if you use Lync 2013 in VDI mode.
Download the x86 package now.Download the x64 package now.
http://support.microsoft.com/kb/2812461 (as of 02-12-13, may still be catching up with web caches)