According to this https://www.sitepoint.com/browser-trends-january-2016-12-month-review/ IE10 is only 1.37% and decreasing all the time. So it looks reasonable to drop its support now.
According to this https://www.sitepoint.com/browser-trends-january-2016-12-month-review/ IE10 is only 1.37% and decreasing all the time. So it looks reasonable to drop its support now.