Exchange Server 2010 SP1 includes archiving and discovery enhancements, a faster Outlook Web App (OWA), upgraded mobility features, and several management tools improvements. Public announcement was made via the Exchange team blog here.
The new video introductions to Exchange technology have now been posted to the updated workload pages on Microsoft.com/Exchange. These videos will help land the Exchange product narrative in simple and interactive ways. Each workload page includes a 30-45 second video which introduces the Exchange technology. Also included on the workload pages are case studies relevant to the workload, links to whitepapers and demos, and other relevant information.