Office 2007 Beta 2 just launched on the MSDN Office Developer Center.  Check it out!

Here you will find tons of new information about Office 2007.  My favorite is series of Screencasts covering "How Do I" Office 2007 development and customization topics.  They are short, impactful videos that walk you through these topics:

Extending the Office 2007 UI with a Custom Ribbon

Extending the Office 2007 UI with a Custom Task Pane

Generating Office Documents using the New XML Open File Formats

Creating and Deploying a Feature for Windows SharePoint Services V3

Creating and Using Event Handlers in Windows SharePoint Services V3

Creating Custom Document Information Panels

Creating Custom Workflows with the SharePoint Designer 2007

Customizing a Windows SharePoint Services V3 site with the SharePoint Designer 2007

Getting Up and Running with Excel Services

And stay tuned... Many more are on the way!

Kudos to Erika Ehrli the Office Developer Center site manager and the MSDN team for pulling this off!

And to Ted Pattison for his excellent work in producing these screencasts.