While there hasn't been much clamor for a first service pack for Office 2007, Microsoft certainly turned one out promptly. Released today, the update brings with it the following improvements, according to a Microsoft press release:

-- Full compatibility for SharePoint and other server products with Windows Server 2008.

-- Support for AJAX, "enabling developers to create custom Web Parts for their customers."

-- Manageability enhancements "to consolidate or repartition site collections across SharePoint content databases."

-- Performance enhancements, particularly with large files.

-- Improvements in performance and stability for Project 2007 and Project Server 2007.

-- Incremental security enhancements.

The full run-down of what's in SP1 is here (Word doc).