Two new Apple Watch sizes are coming according to Apple's sitemap leak

Aside from leaking the official names, color and storage options of the new iPhones, Apple's product sitemap also reveals the new sizes of the Apple Watch Series 4. 

While current Apple Watch models come in 38mm and 42mm sizes, the upcoming Apple Watch Series 4 will be offered in 40mm and 44mm sizes. In addition, the GPS and cellular models will be available in space gray, silver and gold aluminium.

There will also be stainless steel models which will include the Nike and Hermes collections. However, there is no mention of ceramic edition models for the Apple Watch Series 4. There are mentions of new sport band colors including a multi-color leather band and a gold stainless steel band.

Source: AllThings.how via 9to5Mac