Below article is taken from MSExcahnge team site, if you have not seen it yet , here it is.
Exchange 2010 is Code Complete and on its way to General Availability
We are happy to announce that Exchange 2010 is Code Complete! Our senior leadership team has signed off on the final code, and it has been sent to our early adopters for one final look before its public release. This Release to Manufacturing (RTM) milestone means we are on our way to general availability and the launch at Tech·Ed Europe 2009 (http://www.microsoft.com/europe/teched/) in early November.
For those of you attending Tech·Ed in Berlin this year, be sure to check out the Unified Communications track, which is packed with technical content on Exchange 2010. And be sure to visit us at the Exchange product booth in the Exhibition Hall and let us know what you think of the product. Crystal Flores, who interviewed some of you on video at Tech·Ed North America earlier this year, will be on-hand in Berlin in a few weeks, armed with a camera and interview questions. A group of us are also marching to Las Vegas for Exchange Connections the same week where our fearless leader Rajesh is giving the keynote.
oz Casey Dedeal,
MCITP (EMA), MCITP (SA)
MCSE 2003, M+, S+, MCDST
Security+, Project +, Server +