It looks like the long-awaited Release Candidate build of Vista SP2 is hitting the streets today, alongside its counterpart for Server 2008. According to Ars Technica, these guys will soon be available for testers via Windows Update, as a standalone installer, or as a slipstreamed version for select languages, including English, Spanish, German, French, and Japanese.

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Vista, Server 2008 SP2 starts making the rounds as a Release Candidate