Now you can download Exchange Server 2010 SP2 (remember Bharat Suneja’s blogpost). Microsoft Exchange Server 2010 SP2 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.

It contains the new features and capabilities like, Outlook Web App (OWA) Mini, Cross-Site Silent Redirection for Outlook Web App, Hybrid Configuration Wizard, Address Book Policies(GAL segmentation), Mailbox auto mapping, customer requested fixes etc.

Related info:
+ What’s new in Exchange Server 2010 SP2? http://technet.microsoft.com/en-us/library/hh529924.aspx
+ Download Exchange Server 2010 SP2: http://www.microsoft.com/download/en/details.aspx?id=28190
+ Release notes for Exchange Server 2010 SP2: http://technet.microsoft.com/en-us/library/hh529928.aspx
+ Issues that are fixed in Exchange Server 2010 SP2: http://technet.microsoft.com/en-us/library/hh672189.aspx
+ Older Channel 9 Video: What's New in Microsoft Exchange Server 2010 SP2: Featuring GAL Segmentation