The new Apple Watch Series 3 will be available for preorder on September 15th, and released September 22.
The Series 3 contains many new features, but most prominently cellular connectivity. It maintains the same form factor and size as the last generation model, while including all the new cellular hardware.
Cellular partners in the US include Verizon, AT&T, T-Mobile, and Sprint. Many others are available around the world. Apple worked with each carrier individually, and many will have limited time introductory offers for those opting to enable the cellular features.
Prices for the new Series 3 will start at $329 for the sans-cellular version. Cellular will run you $399, and the series 1 Apple Watch is still around at a new price point of $249.
It comes in the same 2 case sizes it has in the past, 38mm and 42mm. Series 3 with cellular launches in gold, silver or space gray aluminum, or silver or space black stainless steel. There are a multitude of band options to accompany them as well.  If you are looking for the non-cellular version of the Series 3, it will come in gold, silver or space gray aluminum cases with a Sport Band starting at $329.
The series 1 will come in silver or space gray aluminum starting at $249, and the Apple Watch Edition in gray or white ceramic will be available starting at $1,299.