After launching Windows 10 operating system 18 months ago, Microsoft is still offering free upgrades, but there is a catch. While the free promotion for Windows 7 and 8.1 owners ended after the first 12 months, you can still upgrade using the accessibility features.
Users with assistive technology can still upgrade for free and although the promo is specifically targeting people with disabilities, pretty much everyone can upgrade to Windows 10. There is no word when the promotion will end, but if you plan to upgrade your OS, make sure to do it as soon as possible.
"We are not restricting the free upgrade offer to specific assistive technologies. If you use assistive technology on Windows, you are eligible for the free upgrade offer. We have not announced an end date of the free upgrade offer for customers using assistive technology. We will make a public announcement prior to ending the offer."