We have posted the SP1 Update release for download through the Top Downloads section on http://technet.microsoft.com/subscriptions.
TechNet Plus subscribers, you now can download the following:
Windows Vista Service Pack 1 (x86, x64) - DVD (English, French, German, Japanese, Spanish)
Windows Vista Service Pack 1 (x86) - EXE (English, French, German, Japanese, Spanish)
Windows Vista Service Pack 1 (x64) - EXE (English, French, German, Japanese, Spanish)
To use the Top Downloads , you will need to install the Akamai Technologies Download Manager Browser add-on to access these files and will need to allow pop-ups (at least temporarily).
The files are on the Top Downloads rather than Subscriber Downloads & Product Keys to load balance the with the download activity related to Windows Server 2008.
The integrated full install of Vista with SP1 will be available for download prior to the end of the month; we are working through download capacity planning and will make it available as soon as we can.
TechNet Plus subscriptions
Reminder: Please visit Mike Nash’s blog for information on the broad SP1 availability.