All you need to know about Apple's latest iPhones, watches

Apple is upgrading its flagship iPhone X with two new devices: the iPhone XS and the iPhone XS Max. Both come in gold, silver or space gray with the only big difference being their size.

Both of the iPhones have a dual-camera system on their rear panel. One of these is a 12MP wide-angle lens which comes with a new image stabilisation sensor. It's supported by a 12 MP telephoto camera that has 2x optical zoom. On the front, there is a True Depth camera that allows facial recognition.

Apple also launched its iPhone XR with a 6.1-inch LCD display. The company says its screen, which is Liquid Retina, is the first edge-to-edge LCD handset they've built.  The XR has a single 12MP wide-angle lens on its rear panel. The XR is being made available in white, black, blue, coral and yellow. Apple is also making a Product (RED) version.

Inside both phones is Apple's latest chip, which it has dubbed as A12 Bionic. The company says it is the first seven nanometer chip to be used in a smartphone and it is capable of running five trillion operations per second compared to the A11 Bionic's 600 billion. It has 6.9B transistors, a six-core CPU, four-core GPU and an eight-core neural engine.

Pricing is through the roof this year, with Apple revealing the most expensive iPhones ever

The XS has a 5.8-inch OLED screen and packs in 2.7 million pixels while the XS Max has a 6.5-inch OLED screen and 3.3 million pixels. A look at how iPhone sizes have changed over the years

iPhone (2007) - 3.5 inches
iPhone 3G (2008) - 3.5 inches
iPhone 3GS (2009) - 3.5 inches
iPhone 4 (2010) - 3.5 inches
iPhone 4S (2011) - 3.5 inches
iPhone 5 (2012) - 4 inches
iPhone 5S (2013) - 4 inches
iPhone 5C (2013) - 4 inches
iPhone 6 (2014) - 4.7 inches
iPhone 6+ (2014) - 5.5 inches
iPhone 6S (2015)  - 4.7 inches
iPhone 6S+ (2015) - 5.5 inches
iPhone SE (2016) - 4 inches
iPhone 7 (2016) - 4.7 inches
iPhone 7+ (2016) - 5.5 inches
iPhone 8 (2017) - 4.7 inches
iPhone 8+ (2017) - 5.5 inches
iPhone X (2017) - 5.8 inches
iPhone XS (2018) - 5.8 inches
iPhone XR (2018) - 6.1 inches
iPhone XS Max (2018) - 6.5 inches

Starting at $399, the new Apple Watch Series 4 is a significant upgrade from its predecessor. One of the most notable upgrades was the Watch's first increase in display size.

New features for the Apple Watch Series 4 include:
The watch can also monitor electrocardiogram, or ECG, readings
Another new feature is that it can detect atrial fibrillation
A new S4 chip with a 64-bit dual-core processor, delivering twice the speed when compared to Series 3
The same all-day battery life of its predecessor, despite its improved performance
A redesigned Digital Crown that now includes haptic feedback for "a more mechanical and responsive feel..."
The addition of yoga and hiking as trackable workout types
A 50% louder speaker

Apple revealed the time it will take to release software updates as well. Its mobile operating system, iOS 12, will be available to download from September 17, as will the software update for its AI speaker, the HomePod. Meanwhile, macOS Mojave, which is designed for MacBooks and other Macs, will be released on September 24.
 

Mark your calendars for the major announcements
 
iPhone XS release date - September 21
iPhone XS Max pre-order date - September 14
iPhone XS Max release date - September 21
iPhone XR pre-order date - October 19
iPhone XR release date - October 26
Apple Watch 4 pre-order date - September 14
Apple Watch 4 release date - September 21