Also, LTE replacing private WiFi for sensitive corporate applications? In whose dreams?
Why do you think it's replacing WiFi? The article clearly states;
Always Connected is the branding for PCs that include built-in gigabit LTE and WiFi; long battery life (in ARM devices' case, allegedly multiple days without a recharge); run Windows 10; and be thin, light and fanless.
With x86 dying, MS and everybody needs this.
x86 isn't dying. But you're right, MS and everybody needs this. The truly ironic part is that Apple already has it's OS running on ARM, and yet Microsoft is going to beat them to the punch on ARM-powered notebooks. (Yes, Chromebooks technically were already there, but this is the first mainstream, general-purpose OS.)
With cheap ARM-powered notebooks with a 20+ hour battery life, this is definitely going to shake things up.
it's not compatible with all the windows x86 applications and the number of windows ARM applications is non-existent.
Did you read the linked article at all? You must've missed the part about the WoW being extended to provide x86 emulation on ARM. Most existing Windows apps will run on it, and the emulation will be refined as they have more real-world examples of what works and what doesn't.
Neutrinos have bad breadth.