AdDuplex released its monthly report today, showing Windows usage based on usage of apps that run the AdDuplex SDK v2 or higher on the date of April 26. AdDuplex runs on over 5,000 Microsoft Store apps.
The Windows 10 October 2018 Update continues to grow in usage at a very slow pace. Now on 29.3% of Windows 10 devices, it's a modest improvement from last month's 26.4%. Once again, most of the increase comes out of the April 2018 Update's usage, which dropped from 66.3% to 63.2%. The other one that saw a decrease is the Windows 10 Fall Creators Update, which fell from 3.5% to 3.3%.
Versions 1703 and older are now grouped into one category, and that actually grew from 3.4% to 3.5%. Finally, the amount of Insiders doubled from 0.4% to 0.8%, which is normal when we're so close to a public release.
We can see that the Windows 10 October 2018 Update has moved at a much slower pace than all previous updates. Of course, version 1809 was problematic. It was originally released in early October of last year, pulled due to a variety of issues, and re-released in mid-November.