While Microsoft has said that Windows 10 Mobile was designed to run on smartphones and small tablets, it looks like at least one hardware company has it running on a larger 10-inch device with an ARM-based processor.
The Chinese website ITHome has posted two images of the tablet. Possibly taken at this week's Computex 2015 event the images show the unnamed tablet using Windows 10 Mobile with a 1024x768 display and running on the Rockchip RK3288 processor, based on the ARM Cortex-A17 design.
Unfortunately, that's all the solid information we can get from these images. There's no way of knowing if any OEMs are planning to launch larger tablets with Windows 10 Mobile installed or if this is just a quick hack to make the OS run on this kind of device. Windows RT, which was made specifically to run on large ARM-based tablets such as the Surface RT and Surface 2, won't be getting a direct upgrade to Windows 10. Instead, Microsoft has said that it will issue some kind of update that will "have some of the functionality of Windows 10."