I've installed Windows 10 Creator's Edition Fall Update. It's very nice. It has a lot of extra support for 3D printers. And I got all excited when I found out that there's an application for the Windows 10 IoT Core running on Raspberry Pi that lets you install your printer on the network and then print to it straight from Windows 10.
It doesn't work. At least, not for me. I've spent all afternoon creating SD card images, configuring them and then finding out that I always get assigned the same (wrong) printer device and then the driver fails to load.