Microsoft largely stopped offering free Windows 10 upgrades back in July 2016. However, there's been an ongoing exception: if you use accessibility features, you've had an extension of that promo. And now, that last deal is coming to an end. Microsoft has quietly updated its site to reveal that free upgrades for those who need assistive technologies will end on December 31st, 2017. The company hasn't directly explained the timing for the cutoff, but the extension was announced to give extra time to users who had to wait for the July 2016 Anniversary Update before they got promised accessibility features. Given that there have been numerous milestone updates since then, there's a good chance you've already moved to Windows 10 if you were holding out.