A Spanish site named Muywindows has grabbed exclusive screenshots from the upcoming Service Pack for Windows 7. The screenshots seems to have been taken from a demo copy of a Pre SP1 Build of Windows 7 which according to them will be handed over to a selected pool of private testers in the coming weeks.
At this point, the Build number of Windows 7 SP1 is said to be between 7600.20500 and 20700, and it contain about 150 critical updates and security patches. A public beta of Windows 7 SP1 can be expected sometime in summer of this year, probably the same time when Office 2010 RTMs, while the final version can be expected in Q4 2010.
Some of the screenshots from Windows 7 SP1 are as follows: