Tech ARP has just posted the Microsoft Windows Vista Service Pack 1 Candidate Release Preview Details.
"Users of Microsoft Windows Vista can rejoice in the fact that Microsoft just released a preview of the Windows Vista Service Pack 1 Release Candidate! This build was made available to about 15,000 invitation-only testers, but YOU should have no trouble looking for it online."
This preview build is the lead-up to the actual Windows Vista Service Pack 1 Release Candidate, which will be made available to even more testers at a later date. Once the actual Release Candidate is out, you can be sure that Microsoft will release the final Windows Vista Service Pack 1 very soon.
"This Release Candidate Preview build also includes updates that have not been released online as updates, or only made available to specific Microsoft customers and partners. These updates are now part of the build. Therefore, this build is more than just a collection of previously-released hot fixes and security patches."