According to the Office Team Blog (http://blogs.msdn.com/outlook/archive/2007/12/14/office-2007-sp1-has-arrived.aspx) Office 2007 SP1 has arrived.
With Outlook in particular it includes some corrections on compatibility issues with earlier versions, improves general performance and responsiveness (e.g. with Large PST/OST files), RSS feed problems etc.
A full list of changes is available at http://download.microsoft.com/download/B/C/F/BCFBEC81-ED9E-40A3-BBF0-1410B67A365A/Office%202007%20Service%20Pack%201%20Changes_all.xls
How can I download SP1? The Office 2007 SP1 update is available on Microsoft Update (the recommended way to download the service pack), Office Update, and the Microsoft Download Center.
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