Last night the Exchange Server product team released to manufacturing the Beta 2 release of Exchange Server 2007! For those of you keeping track, Beta 2 is build number 605.16.
We are undergoing the final stages of releasing (validating, virus scanning, staging, etc.), and some time on Monday, July 24, 2006, the world will be able to download Beta 2 from http://www.microsoft.com/exchange/default.mspx.
Source: Scott Schnoll's blog.