Microsoft has just made Office 2007 SP2 available for download. Here is the quote about this update.

• Previously unreleased fixes that were made specifically for this service pack.
  • In addition to general product fixes, this includes improvements in stability, performance, and security.
  • You can find out more information in Knowledge Base Article 953195, where product-specific changes are described.
• All of the Public Updates, Security Updates, Cumulative Updates, and Hotfixes released through February 2009.

You can download the English version from this link.