Want to test Vista SP1? Anyone can, starting next week
As you heard here last week, Microsoft is making the Release Candidate (RC) test build of Windows Vista Service Pack (SP) 1 available to a private group of testers this week and to the general public the week of December 10.

Microsoft confirmed its RC rollout plans on December 5. Today, Wednesday, the company made the Vista SP1 RC bits available via Microsoft Connect to the same 15,000 testers it provided with the RC preview. On December 6, Thursday, Microsoft plans to make the Vista SP1 RC bits available on the Microsoft Developer Network (MSDN) and TechNet, officials said. And next week, the week of the 10th, Microsoft plans to make the Vista SP1 RC build available to anyone interested in downloading it from the Microsoft Download site.
ZDNet

Ja osobne jsem tedy spis zvedav na SP3 pro XP.