Users won't be able to upgrade to Windows 10 via assistive technologies from 2018.
Microsoft has quietly announced it will be ending free Windows 120 upgrades for assistive technologies users come the end of the year, after saying it would not be available to everyone forever when it was first announced.
The assistive technologies page has been upgraded to say: "If you use assistive technologies, you can upgrade to Windows 10 at no cost as Microsoft continues our efforts to improve the Windows 10 experience for people who use these technologies Please take advantage of this offer before it expires on December 31, 2017."
Although the path was initially designed for people using the accessibility options on their computer, there's no verification process in place to stop those without extra needs upgrading, so it's possible users who don't want to stump up the $119 fee to get Windows 10 have been using the assistive technologies pathway to get around paying.
If you still want to upgrade after this particular path expires, you can still use an existing Windows 7/8.1 product key to get the platform for free. However, it's not clear whether Microsoft will stop this route to free Windows 10 upgrades from working at the end of the year as well.