Exchange Server 2010 Service Pack 1 Beta is available now. It incorporates a number of feature updates including: archiving and discovery enhancements, a faster Outlook Web App (OWA), upgraded mobility features, and several improvements in the management UI. In short it helps you achieve new levels of reliability and performance by delivering features that help to simplify your administration, protect your communications, and delight your customers by meeting their demands for greater business mobility.
Microsoft Download Center Link is here and direct downloadabe exe file link is available below.
File Name: Exchange2010-SP1-Beta-x64.exe
Date Published: 6/5/2010
Download Size: 532.5 MB