Meet the iPhone 6s and 6s plus

Apple today at its annual event announced its latest iPhone series - the 6s and 6s plus. Like previous "S years", there is minimal physical differences between them and their preceding year's models though the architecture have been greatly tweaked.

Camera:
For the first time in years, Apple is adding more megapixels to the iPhone camera, offering a 12-megapixel camera. That’s a 50 percent improvement from earlier generations of the iSight camera.
But in order to avoid trading off more pixels for lower image quality, Apple has introduced ‘deep trench isolation’, which separates photo diodes to help maintain accurate color quality and reduce crosstalk and noise.
The new iSight camera still protrudes slightly from the body of the phone, just as it does on the iPhone 6 and 6 Plus.
Beyond still imagery, the new iSight camera is also capable of taking 4K video, which means each frame has 8 million pixels.

A9 Architecture:

The new A9, found in the iPhone 6S and 6S Plus, is the third generation of the 64-bit chip Apple has been using, built with a new transistor architecture. It’s 70 percent faster than the A8 chip used in the iPhone 6 and iPhone 6 Plus, and 90 percent faster graphics performance than the previous generation.
Alongside the new A9, the new iPhones will feature a brand new M9 coprocessor that is always on, to help detect motion for apps like Health. Thanks to the new processors, TouchID is twice as fast in the new phones.

Design

Following rumors, the next iPhone will come in a rose gold color, and all iPhone models are made with a brand new Apple custom alloy, the same alloys used in the aerospace industry. The Apple team has also introduced a new type of stronger glass for the display.

3D Touch

Apple has introduced a feature called 3D Touch, which shows an extra dimension to the screen you’re used to. Using Force Touch, which is already available on the Apple Watch and on new MacBooks, users can hold down on various apps to both ‘peek’ and ‘pop’.
For example, you could lightly tap on the content of an email to peek at the content inside, and if you press harder, the content you’re peeking at will pop open fully.
As is standard with Force Touch, the iPhone will offer haptic feedback as a part of the 3D Touch experience.
A few examples of 3D Touch on the iPhone include: lightly tap on the camera icon to get camera options, and press harder to go straight into selfie mode, lightly tap on various app to choose to go into various parts of the app, lightly tap on a flight number and get flight tracking information as a ‘peek’, or Force Touch an address to get a preview within the Maps app.
It’s not just default Apple apps that use Force Touch — Instagram, Facebook and others have integrated 3D Touch into their apps to let you peek and pop.


In terms of pricing and availability, the new iPhone 6S and iPhone 6S Plus will come in the exact same prices and configurations as the previous generation, starting at $199 and $299 respectively for the 16GB model.
But beyond that, Apple is starting a new iPhone Upgrade Program that will allow users to get an unlocked phone that includes Apple Care and costs $32/month. Every year.
Everything goes live on September 25.