https://arstechnica.com/gadgets/2017/10/windows-10-fall-creators-update-lots-of-small-changes-and-maybe-the-revolution/

It has arrived: Windows 10 version 1709, build 16299, the Fall Creators Update. Members of the Windows Insider program have been able to use this latest iteration for a while now, but today's the day it will hit Windows Update for the masses.

As with the Creators Update earlier this year, the Windows Update deployment will be slow to start off with. After a spate of issues around the Anniversary Update, which shipped in 2016, Microsoft took a more measured approach with the Creators Update. It took about five months for the previous update to reach two-thirds of machines, as the company rolled the operating system out first to systems known to be compatible, then expanded its reach to an ever larger range of hardware and software, and finally opened the floodgates and offered it to (almost) any Windows 10 machine.