The Lync Server Open Interoperability Program is now available
http://technet.microsoft.com/en-us/lync/gg131938.aspx
– Hardware Requirements. Link
– Bandwidth Table. Link
– Lync New features – server side. Link
– Lync New features – Client Side. Link
– Port Requirements. Link
– Lync Server 2010 Protocol Workloads Poster. Link
– Architecture – Server Roles. Link
– Architecture – Topologies. Link