Does this mean that Windows 10 (not Windows 10 IoT Core) will also come to Raspberry Pi 3?
I personally see the much larger performance regression for Windows 10 on RPi3 in the fact that at least on Windows 10 IoT Core there was no hardware acceleration of graphics on RPi3 when I last tested it (about a year ago), which caused it to feel rather sluggish.
Snapdragon 835 will probably be the minimum level of ARM performance Microsoft will accept. We may start seeing Samsung's Exynos and a high-end MediaTek processor being supported in a year or two.