Lync 2010 mobile clients have been released to the Windows Mobile, iPhone/iPad and Android app stores. They have not all been made available for download yet as they are still undergoing the application approval process in each app store.

http://lync.microsoft.com/en-us/Product/UserInterfaces/Pages/lync-2010-mobile.aspx

The mobile clients require a Lync server update, which we will implement tonight.