http://blogs.technet.com/b/matthewms/archive/2005/11/16/414633.aspxAs some of you may have heard, there are some changes to the next version of Exchange, specifically around 64 bit and that 64 bit will be the only released version. So you may have some of these questions: Why did Microsoft make the decision to offeren-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)