https://www.theverge.com/2018/9/12/17849898/apple-confirms-iphone-xs-iphone-xs-max-iphone-xr-names

A last minute leak has seemingly confirmed the iPhone XS, XS Max, and XR names for Apple’s newest phones. The names, first spotted by ATH, are found in a product sitemap XML file hosted on Apple.com, and are associated with items that will be available to purchase including AppleCare support and phone cases. Today’s leak would put the names “iPhone XS Plus” and “iPhone XC” out of contention. The file has been pulled, but not before we grabbed a few screenshots.

The XML file also mentions the Apple Watch Series 4, in new 40mm and 44mm sizes which are slightly larger than the existing 38mm and 42mm watches.