Polycom's range of voice solutions are now supported with Lync 2013 and these include the CX Family, SoundPointIP Family and VVX Business Media Family of desktop and conference phones. Details of these solutions can be found on the Polycom website. Microsoft's TechNet maintains the list of voice solutions that are certified to work with Lync 2013 / 2010 here and an excerpt from this page is shown below:
The Polycom HDX family and Group Series family of RealPresence Room solutions have also been updated for Lync 2013 support. The specific firmware revisions required are 3.1.2 for HDX and 4.1.1 for Group Series. Existing Polycom customers may download the latest firmware revisions at the support website here. To quickly depict the ease of configuration of Polycom's solutions to work with Lync 2013, below is a screen capture from the Group Series web UI that shows the parameters required:
All of the above firmware versions work with Lync 2013 using the legacy RTV codec and have been tested with the full PC versions of Lync 2013. Although the Lync 2013 mobile client does provide support for RTV as well, there's currently no official support from Polycom for Lync 2013 mobile clients.