The Lync Solutions Catalog comes with a hardware and an apps section. This provides an easier to view and navigate overview of qualified devices and apps compared to the interop site. Check it out at: http://catalog.lync.com/en-us/index.aspx
The Lync Server 2013 Multitenant Hosting Pack Deployment Guide is now part of the Technet Library. This makes maintenance easier, so we will probably see some updates soon. Right now the hardware requirements are still based on Lync 2010, the correct information can be found here.