Microsoft's blog post even says chipsets able to handle the hardware-based DRM required for 4K are already shipping, and the software should come this fall to move further beyond the reach of other browsers. Of course, if all that streaming prowess and the addition of extensions aren't enough to drag you away from Chrome, you don't necessarily need to use a backup browser even on your PC -- Netflix's Windows 10 app can handle 1080p streaming all on its own.