The Microsoft Exchange Server 2010 SP2 Web Services SDK September 2011 is now available to download.
This release of the Exchange 2010 Service Pack 2 (SP2) Web Services Software Development Kit (SDK) provides new and updated documentation and samples for building applications that use Web services in Exchange 2010 SP1 . Use this SDK to help you develop collaborative Web services–based enterprise applications.
The Exchange 2010 SP2 Web Services SDK assists developers who are building Web services–based applications for Exchange 2010 SP1. This release of the SDK provides new and updated information and sample code to help you develop collaborative enterprise applications for Exchange 2010 SP1. The Readme file contains installation instructions for and late-breaking information about the Exchange 2010 SP1 Web Services SDK.