It's nearly the end of the road for the Apple Watch Series 4, which was added to Apple's public-facing vintage products list ...

As of today, all variants of the Apple Watch Series 4 are considered “vintage” worldwide (via MacRumors). This includes the aluminum and stainless steel versions in 40mm and 44mm sizes.

The Apple Watch Series 4, launched in September 2018, is now officially labeled as a "vintage" product. This includes both the aluminum and stainless steel versions of both 40mm and 44mm variants ...