Windows 7 Service Pack 1 Airs to TechNet, MSDN Subscribers
 

Developers, developers, developers... here's a service pack

If you happen to be a developer with MSDN or TechNet privileges, you can now go out and snag the release version of Windows 7 Service Pack 1 and Windows Server 2008 R2 SP1.

The pack brings a lot of compiled minor bug fixes, security fixes, etc. Most of these have already been distributed via Windows Live. It's unknown whether the most critical components originally expected -- USB 3.0 support and Bluetooth/Wi-Fi performance improvements -- are present in the final build. As sources aren't talking about it, we'd be inclined to say that it doesn't seem likely they will be included at this point.

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Source: DailyTech