Microsoft (sort of) released Office 2007 Service Pack 1 today. I say "sort of" because the download link is broken as I write this. But here's what's new:

The 2007 Microsoft Office system Service Pack 1 (SP1) reflects unceasing efforts at Microsoft to address customer concerns. Nearly all of the improvements included in the 2007 Office system SP1 are in response to direct feedback from power users at large organizations or indirect feedback from home and office users through the Dr. Watson bug-reporting system. By tapping these extensive customer-feedback channels, Microsoft targeted the issues that customers care about most. As a result, the 2007 Office system SP1 delivers significant stability and performance improvements to the applications that home and office workers rely on every day.

By deploying the 2007 Office system SP1, home users and businesses can quickly reap benefits in the following areas:

Stability. Using data from the Dr. Watson bug-reporting system, Microsoft fixed, at minimum, the five software bugs that most frequently caused each application in the 2007 Office system to crash. The 2007 Office system SP1 also improves the stability of server components in the 2007 Office system and compatibility with Windows Server 2008, so companies can more confidently move forward with upgrade plans.

Performance. The 2007 Office system SP1 improves performance in applications that are pervasive in modern offices, most notably: Microsoft Office Excel 2007, Microsoft Office Outlook 2007, Microsoft Office PowerPoint 2007, and Microsoft Office SharePoint Server 2007.

Security. By incorporating incremental advances in security and results from application testing, the 2007 Office system SP1 offers home and office users better protection against malicious software and potential threats to privacy.