Microsoft launches,

Microsoft Exchange Server 2010 Beta

Microsoft Exchange 2010 helps you achieve new levels of reliability and performance by delivering features that simplify your administration, protect your communications, and delight your users by meeting their demands for greater business mobility. And when you download the latest beta software, you're automatically registered to access valuable beta resources assembled in one convenient location.

You can Download it for free

http://technet.microsoft.com/en-us/evalcenter/dd185495.aspx