"Hey Siri" support and possibly wireless charging case alongside AirPower charging mat.
Apple Watch Series 4 Now Available for Pre-Order
Apple Watch Series 4 marks the first ever design change for the Apple Watch since its debut, with the new models offering displays that are up to 30 percent larger along with a smaller, thinner case. The new models are available in 40 and 44mm size options, up from 38 and 42mm.
Several new watch faces have been designed for the Apple Watch Series 4 to take advantage of the additional screen real estate, and all models now use black ceramic and sapphire crystal backing for better cellular service.
Haptic feedback has been built into the Digital Crown, which is also equipped with electrodes to enable a new feature that lets the watch take an electrocardiogram (ECG) reading. Inside, the Apple Watch Series 4 is equipped with a faster, more efficient S4 chip and a next-generation accelerometer and gyroscope enable fall detection. Despite the new features, Series 4 models continue to offer "all-day" 18-hour battery life.
Pre-orders for the cellular Apple Watch Series 4 models are available in Australia, Canada, China, Denmark, France, Germany, Hong Kong, Italy, Japan, Singapore, Spain, Sweden, Switzerland, the UAE, UK and US.
Non-cellular Apple Watch Series 4 models are available for pre-order in Australia, Austria, Belgium, Canada, China, Denmark, Finland, France, Germany, Guernsey, Hong Kong, Ireland, Italy, Japan, Jersey, Luxembourg, Netherlands, New Zealand, Norway, Portugal, Puerto Rico, Saudi Arabia, Singapore, Spain, Sweden, Switzerland, the UAE, UK, US and US Virgin Islands.
Major U.S. carriers - Verizon, AT&T, Sprint, and T-Mobile - are accepting pre-orders for the LTE Apple Watch Series 4 models, as are other carriers around the world. Major online retailers including Best Buy and Target are also accepting pre-orders starting today.
Supplies of the Apple Watch Series 4 could potentially be limited and the device may be in high demand given that it's a major upgrade over the Series 3, so customers interested in launch-day delivery should order as soon as possible.
Apple Watch Series 4 models are available in Silver, Space Gray, and Gold in both aluminum and stainless steel. Apple is offering multiple configurations and band options for the Series 4, with a full list of options available here.
The first Apple Watch Series 4 pre-orders are expected to arrive to customers on Friday, September 21, the official launch date for the device. Nike+ Series 4 models are available for pre-order today but won't be shipped out to customers until October 5.