iPad Air 3 will reportedly feature Smart Connector for accessories, no 3D Touch

The Smart Connector port allows iPad users to connect iPad-optimized accessories like Apple's Smart Keyboard and Logitech's Create keyboard.
The iPad Air 3 won't feature 3D Touch like found on the iPhone 6s, according to 9to5mac, but will come in around the size of the iPad Air 2. Furthermore, the camera is expected to be improved thanks to a rear-facing LED flash like on Apple's line of smartphones.
Apple is expected to unveil the iPad Air 3 at its rumored media event on March 15. Alongside the new tablet, Apple is expected to unveil the iPhone 5se in only space gray, gold, and silver (no hot pink like rumored) and a Space Black Apple Watch with a Milanese Loop, new Sport Band colors, and line of NATO-style nylon straps.

 The next version of the iPad, likely to be called the iPad Air 3, will feature Smart Connector functionality like found on the iPad Pro released in November 2015, according to 9to5mac.