The iPad Air 2 is a mostly incremental update. Including the Touch ID sensor, the thinnest tablet body recorded at 6.1mm, and the new Apple A8X processor, which includes the M8 motion processor. Also included inside the iPad Air 2 is an optically bonded display: the LCD, glass, and touch sensor are unified, so there are no air gaps between layers, with added anti-reflective coating.
Also, this year the iPad Air 2 will come in grey, white, and now gold. Pricing remains the same: $500 for the 16GB WiFi version; bigger storage sizes come in $100 increments, with a $130 premium for LTE versions.