Vista SP2, Server 2008 R2 start making the rounds as Release Candidates

It looks like the long-awaited Release Candidate build of Vista SP2 is hitting the streets today, alongside Server 2008 R2. 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. Rumor has it that Microsoft is gearing up for a final release date sometime in April.