https://www.cnbc.com/2017/09/11/iphone-x-kgi-says-apple-only-building-10000-a-day.html

Apple's next high-end iPhone, which will be introduced on Tuesday and called the iPhone X, according to leaks, may be very difficult to buy.

According to a note from KGI Securities analyst Ming-Chi Kuo that was obtained by MacRumors, Apple's suppliers are only able to build 10,000 iPhone X units per day. Kuo said this "means the model will remain in severe short supply for a while."