The Release Candidate of Windows Vista Service Pack (SP) 1 is live.
Anyone who is interested in checking out the near-final test build of Vista SP1 can get the bits for free from the Microsoft Download Center.
Microsoft has been releasing private test builds of Vista SP1 to various groups of testers for the past several months.
Microsoft officials have said the final version of Vista SP1 should hit in the first quarter of 2008.
(Thanks to Neowin for the pointer to the Vista SP1 RC download.)