The festive season started early this year at Microsoft and what a feast! First Office and Vista, now Exchange 2007. Yes the new Exchange is ready for prime time. After many months of betas and testing, Exchange 2007 is now final. This was announced on the Exchange Team blog.
As of writing the final build was not yet publicly available for download. However this is expected anytime soon. For the moment you may register to be notified when the download is available.
We will certainly be discussing Exchange 2007 a lot more in the coming months. Meanwhile you may want to start by reviewing the installation or visit the Microsoft Exchange homepage.