AT&T is only US carrier planning to sell Microsoft's latest phones
http://www.cnet.com/news/att-is-only-us-carrier-planning-to-sell-microsofts-latest-phones/
In other words you should nag to your provider, not Microsoft.
Well that sucks.
Speaking of the XL, I wonder Microsoft's decision to include "liquid cooling" will mean anything about ths 810 SoC used in other devices (e.g. Nexus 6P).
I may have to consider an iPhone if the 5X/6P review poorly.
:gasp:
My decision will probably be between an iPhone and an Android phone after learning that.