Q: Is there an updated spreadsheet that contains all Group Policy settings including Windows 8?

A: Windows 8 Group Policy settings and corresponding registry values can be found in an Excel spreadsheet maintained by Microsoft. The spreadsheet contains every Group Policy setting and its corresponding registry value (where appropriate), including for Windows 8. It can be downloaded at the Microsoft download site. You'll find many new settings specific to Windows 8 and Internet Explorer 10 that focus on new features.