Well the chipset is what supports the DPI interface, not the OS, unless there is some software work required to initialize it.
The official display works as a display for Windows 10 IoT, and I am not sure if touch works, but that uses the DSI interface, not the DPI interface.
The DSI & DPI interface are both driven by hardware, and both likely require OS support for touch.
I'm trying to get the display working on Linux without having the benefit of a monitor to install the software, and that is not going well. I think that init routine is required to make the display work, and that may be work required for Win10 IoT.
If that helps.