According to Peter Bright of Ars Technica and their source, NetMarketshare, Internet Explorer 11 is steadily increasing in popularity. The browser is, now, more popular than both IE10 and IE9, combined. To put that into perspective, IE11, alone, is just a few percent shy of their entire Firefox usage numbers.
Of course, these figures change wildly depending on who performs the measurement. Wikimedia, for instance, claims that only 18% of their users are browsing with IE (NetMarketshare says 58%). W3Counter also has a significantly higher volume of Safari users, almost triple, than anyone else. (Update: 5/6/2014 @ 1:18pm EDT — That 18% figure probably does not include IE11. Actual IE figure, including IE11, is probably ~25%)
Still, Internet Explorer 11 is Microsoft doing things right. They are embracing web standards, including ones which are outside the realm of the W3C. Because of WebGL's potential impact for web apps, they have even accepted it, a Khronos Group standard, into their ecosystem. IE11 shows what Microsoft can do when they need to. They were being pushed around by Google Chrome and mobile app platforms and, in response, they made a really good browser. Hopefully its adoption weeds out old Internet Explorer versions and give us a healthy mix of truly standards-compliant browsers.
Maybe then, we can truly write just one frickin' website.