I'm sure that windows 8 is deployed in a more than a few places. But for instance, the department of Ag _just_ upgraded to windows 7 from XP (squeaking by the end-of-life deadline).

http://www.ocio.usda.gov/products-services/end-user-services...

In the case of the IRS, they are _still_ using windows XP, and they are paying Microsoft for support!

http://www.engadget.com/2014/04/13/irs-pays-microsoft-for-wi...