The new Lenovo Yoga tablet 3 PRO (ZA0G0054DE) sports anm Atom x5 with LTE modem and GPS
unofortunatelly 2GB ram, 32GB rom, Android 5.1 only (no dual boot)
But at least it means that Intel has started delivering the X5 bundled with the connection module.
So I hope we can see chinese manufacturer using it too
right now usb-c is nothing more than a reversible usb2.0 port, usually with some electric modds to enable fast charging (but hose who remember the Google vs One+ cable critics should know, there is no agreemeng about the electic part too)
Actual chipsets do no support usb3.1 fast speed, so we have have to wait for the next gen chipset.