A 2013 version of Lync Mobile is coming…soon. But the rest in a nutshell…No (at the time of writing).
The Attendee client has effectively been replaced by Lync Web App, which can now to Voice and Video via a web browser.
But the 2010 version for the rest is supported to work with Lync Server 2013
Reference
Clients for Lync Server 2013
http://technet.microsoft.com/en-us/library/gg398996(v=ocs.15)
Supported Clients from Previous Releases
Lync Server 2013 supports the following clients from previous server releases. You can make certain previous clients, noted here available to users when they join meetings. For details, see Configuring the Meeting Join Page in the Deployment documentation.
- Lync 2010 Mobile Lync Server 2013 supports all of the Microsoft Lync 2010 Mobile mobile apps. Microsoft Lync 2010 Mobile provides IM, enhanced presence, and telephony for users in your organization who are connecting from a smartphone or a phone running a Professional edition of Windows Mobile. You can instruct your users to install Microsoft Lync 2010 Mobile by directing them to the app marketplace for their mobile phone.
- Lync Phone Edition Lync Phone Edition software for intelligent IP phones (for example, USB-attached phones) has not been updated for Lync Server 2013. Lync Phone Edition continues to be supported in for placing and receiving calls, enhanced presence, and client audio capabilities for conferences.
- Lync 2010 Attendant The Microsoft Lync 2010 Attendant integrated call-management program enables a receptionist to manage multiple conversations at the same time through rapid call handling, IM, and on-screen routing.
