Microsoft has released Documentation for Windows 7 and Windows Server 2008 R2 Service Pack 1 (KB976932)These docs are aimed at IT folks, for home users there is nothing to look at here.
This page currently links to the following documentation:
Deployment Guide for Windows Server 2008 R2 with SP1 and Windows 7 with SP1
Hotfixes and Security Updates included in Windows 7 and Windows Server 2008 R2 Service Pack 1
Installing Windows Server 2008 R2 with SP1
Release Notes for Windows 7 with Service Pack 1
Release Notes for Windows Server 2008 R2 with Service Pack 1