http://wccftech.com/apple-watch-models-unavailable/

Some Apple Watch models are currently unavailable to purchase through the company’s official store, which provides a bit of foreshadowing that the Apple Watch Series 3 might finally be unveiled during the September 12 keynote.

Heading over to the Apple Store, you’d find that just the 38mm Apple Watch Edition is available to purchase. We suspect this is the case because Apple recently refreshed the 38mm variant with a brand new Ceramic finish and it is being sold at a much smaller price tag.