Do all versions of Windows 7 include version 3.5 of the .NET Framework?

Question

Do all versions of Windows 7 include version 3.5 of the .NET Framework?

Answer 1

According to postings on MSDN forums (such as http://social.msdn.microsoft.com/Forums/en/netfxsetup/thread/347bc59c-374c-43f9-a2ed-e9bb89c6f25b), Windows 7 includes the .NET Framework 3.5.1.

However, it's an optional install (probably more correctly it can be disabled):

For Windows 7, it includes the .NET Framework 3.5.1 as an OS component. This means you will get the .NET Framework 2.0 SP2, 3.0 SP2 and 3.5 SP1 plus a few post 3.5 SP1 bug fixes if you have installed Windows 7. Thus, you don't need to manually install .NET 3.5 with SP1. We can add or remove the feature of 3.5 with SP1 via the Programs and Features control panel.

Microsoft should really have some official documentation that makes this clear somewhere, but this is the best I could dig up.