Blatant snip from the press release:

Today at TechEd we announced the availability of the Microsoft SDK for Open XML Formats – June 2007 Technology Preview, which will be downloadable for free from the Open XML Developer Center as well as at this URL:  The download package will go live later today.

There will also be an MSDN forum for this SDK available at this URL:

The SDK includes .NET assemblies that provide a programmable object model for the Ecma formats, along with sample code and how to articles. The SDK will enable developers to decrease their development time for scenarios such as:

    1. Creating documents programmatically
    2. Customizing parts within documents
    3. Adding and inspecting custom XML schema within documents
    4. Working with and customizing document properties

Technorati tags: Office 2007, Open XML, SDK