The Service pack 1 update for Microsoft's Exchange Server 2007 Service Pack 1 is now available, providing better iuntergration with Office Communications Server 2007 and improved security and management for mobile devices. It also pffers support for Windows Server 2008, better integration with Office Communications Server 2007 and improved mobile device security.

Other new features are "an enhanced user experience" in Outlook Web Access, more Management Console features, and improved disaster recovery. Trial version of SP1 are available here and the additional Forefront module is available here