I’m currently in Berlin for TechED this year and yesterday Stephen Elop announced general availability of Exchange Server 2010.

You can see the Key Note and watch the Exchange 2010 Demo expertly navigated through by Julia White: http://vepexp.microsoft.com/thenewefficiency/?s=16828 about 35mins in.

Other resources and links on the launch

http://msexchangeteam.com/archive/2009/11/09/453096.aspx

http://www.microsoft.com/presspass/press/2009/nov09/11-09techedeurope09pr.mspx