Microsoft have recently released a whole bunch of new material for Lync Server 2010. Below I have highlighted some of the cool stuff :
The Lync Server 2010 Stress and Performance Tools (LSS) can be used to prepare, define and validate performance targets of user scenarios offered by on-premise Lync Server 2010 deployment. LSS includes multiple modules and can simulate simultaneous users on one or more Lync Servers. More detailed information can be found in the documentation provided within the installation package.
A Microsoft Excel spreadsheet that calculates WAN bandwidth requirements for a Lync Server deployment based on administrator-specified user profiles and network information.
Microsoft Lync Server 2010 Web Scheduler provides a Web-based online Lync meeting scheduling and management experience for Lync Server 2010.
A spreadsheet for calculating a user’s hardware requirements based on information about users and traffic.