The New Office 2007 GUI

New articles and a download from Microsoft:

Customize the Office 2007 Ribbon User Interface for Developer Part 1
Customizing the Office (2007) Ribbon User Interface for Developers Part 2
Learn about the scenarios and XML mark-up that you can use to customize the Ribbon user interface (UI) in the 2007 Microsoft Office release. The Ribbon UI replaces menus, toolbars, and most of the task pane UI in the 2007 release.

Download the Developer Overview of the User Interface for the 2007 Microsoft Office System An overview of the user interface (UI) system for the 2007 release of the Microsoft Office applications and the goals behind the redesign of the UI. Learn about the impact of the redesigned UI on custom solutions and add-ins, and about opportunities to use or extend elements of the new UI in custom solutions (22 printed pages)