Microsoft has hinted that Service Pack 1 for Windows Vista would be released in the second half of 2007 and will be nothing more than a collection of updates and hotfixes.

VistaSp1.net has attempted to organize and collect over a 100+ Hotfixes that have been released till date for Vista into one single package and made available for download. While there is no guarantee that the real SP1 will contain new features, users who do not use Automatic Updates can anyway download and install this package as it simply contains a bunch of software and hardware performance, driver and usability improvements and fixes for Windows Vista.

Download Service Pack 1 for Windows Vista 32-bit Edition (x86) here (149 MB)

Note that this package is continually updated as and when Microsoft releases new hotfixes.