Download Available for Exchange Server 2007 Service Pack 2

You can now download Exchange Server 2007 Service Pack 2 from here Exchange Server 2007 SP2

We can refer to the following links to know more about SP2 in details:

Things which would be of interest for Exchange application developers are: 

Named Properties cmdlets - SP2 enables Exchange administrators to monitor their named property usage per database.

New User Interface for Managing Diagnostic Logging- SP2 enables Exchange administrators to easily configure and manage diagnostic logging from within the Exchange Management Console.

Exchange Server 2007 Service Pack 2 (SP2), the Manage Diagnostic Logging Properties wizard is added to the Exchange Management Console. In Exchange Server 2007 Service Pack 1 or an earlier version, you must use the Exchange Management Shell to change diagnostic logging levels. for further reading Diagnostic Logging of Exchange Processes