From July up until mid August, Microsoft has been celebrating the service pack. Starting last month, the Redmond company debuted the pre-beta testing phase for private releases of refreshes designed for its flagship products. First came Windows Vista Service Pack 1 followed closely by Windows XP Service Pack 3. This time around it’s the turn of the Office 2007 System. A technical Preview of the first service pack for Office 2007 shipped to a select group of testers on August 15. Microsoft applied the same strategy with the Office 21007 SP1 release, as
it did with the pre-beta version of Vista SP1 and XP SP3, revealing absolutely no details about the service pack.

Still, information was leaked that the Technology Adoption Program members were the recipients of the Office 2007 SP1 Technical Preview, and that is not all that leaked.

Screenshots

Source: Softpedia

screenshots are not working there is some problem with gifs

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but it's not visible here naa