Today Microsoft released version 3 of the Exchange 2010 SP1 Rollup 3. Previously the rollup had been pulled due to compatibility issues with Blackberry. Now, the Exchange team has RU3 for Exchange 2010 back in circulation and can be foundhere.
The full Microsoft product team announcement may be found here for those interested. :)
New Tools and Whitepapers for Lync Server 2010
As with any product, Lync Server is continually evolving and tools to help design, size, and test are constantly being released. Microsoft has recently released the following for Lync Server 2010:
Additionally, a new Lync Server virtualization whitepaper was released a few weeks ago updating Microsoft's support for virtualization throughout the product. It should be noted that the Capacity Calculator shows both physical and virtual requirements helping to bridge the gap between a SWAG and an educated guess.