A Spanish Windows site, Muy Windows has unveiled screenshots of  Windows 7 SP1 Beta installer. The Spanish site also shared their belief of SP1 Beta for Windows 7 might make its way  in the hands of Testers in the upcoming weeks.

win7sp1betainstall1

The SP1 is believed to contain about 150 updates broken down into three categories namely Important, Critical and Optional. Not much is known about the exact contents except for the fact that it will include support for USB 3.0.

win7sp1betainstall2

For more, you can check out the following links:

What’s coming in Windows 7 SP1

Windows 7 SP1 Beta just around the corner

Windows 7 SP1 Beta coming in January 2010

[via Muy Windows]