Today is the grand day. Microsoft just released the Service Pack for Windows 7. Besides the usual pack of all previously released patches (more than 800) it also includes:
Gamers will be happy to know that the Service Pack gives you a few frames in DirectX based games as well.Originally Posted by Microsoft
For anyone interested into the documentation it can be found here.
The service pack can be downloaded through the Download center on Microsoft's website (1953.3MB to download and about 4100MB of free space for 32-bit systems and 7400MB for 64-bit systems to install) or you can wait for the smaller install from Windows Update (about 44MB to download and 750 MB of free space to install for 32-bit systems and 74MB to download and 1050MB of free space to install for 64-bit systems, if you've been keeping your system updated) which is also the recommended way.
More information here.