4 June is the 1st day of TechEd 2007 at Orlando and MS just released Technical Preview of the Microsoft SDK for Open XML Formats. Open XML is the new file format for Word, Excel and Powerpoint; they are based on open standards which is XML and Zip. Under .NET 3.0, there is a System.IO.Packaging namspace to manipulate the XML and Zip functions for Open XML, but now our PLP life is made simpler with Microsoft.Office.DocumentFormat.OpenXML namespace.

Content wise there are a host of tutorials available:

How to: Add a New Part to an Office Open XML Package by Using the Open XML Object Model

How to: Add an Image Part to an Office Open XML Package by Using the Open XML Object Model

How to: Copy the Contents of an Office Open XML Package Part to a Part in a Different Package by Using the Open XML Object Model

How to: Create an Office Open XML Package by Using the Open XML Object Model

How to: Duplicate an Existing Part from an Office Open XML Package by Using the Open XML Object Model

How to: Get the Contents of a Part from an Office Open XML Package by Using the Open XML Object Model

How to: Get Worksheet Information from an Office Open XML Package by Using the Open XML Object Model

How to: Insert Custom XML to an Office Open XML Package by Using the Open XML Object Model

How to: Remove a Part from an Office Open XML Package by Using the Open XML Object Model

How to: Replace a Part in an Office Open XML Package by Using the Open XML Object Model

How to: Retrieve Comments from a Word 2007 Document by Using the Open XML Object Model

How to: Retrieve Property Values from a Word 2007 Document by Using the Open XML Object Model

How to: Validate the Contents of a Part in an Office Open XML Package by Using the Open XML Object Model

How to: Validate an Office Open XML Package by Using the Open XML Object Model

How to: Validate the Contents of a Part in an Office Open XML Package by Using the Open XML Object Model