Microsoft exec, Terry Myerson just announced that Windows 10 has not only passed the 100 Million install mark, but is now running on 110 Million PCs around the globe. This is an amazingly fast adoption rate, considering the official release was just released 10 weeks ago.
This makes it the fastest adoption of any version of Windows.
Microsoft also announced the following brands will be shipping new Windows 10 hardware, which of course ships with Windows 10, so expect this number to continue climbing strongly.