“Lync 2010 - Bandwidth Calculator” has just been published. In addition “Lync Server 2010 - Capacity Calculator” which has been published earlier.
For those who haven’t noticed, here are 3 other documents that have been recently published on TechNet :
1. Lync Server 2010 Resource Kit (13 April, 2011)
2. Lync Server 2010 Security Guide (13 April, 2011)
3. Lync 2010 Client Virtualization (14 April, 2011)