iPad Air 2: A8 (quad core CPU, quad core graphics), Bezel to Bezel IGZO IPS (unless they can get life/color on the OLEDs in shape), 4-8GB RAM (let's use that 64 bit), Finger Print Scanner (mostly for consistency), No Mechanical Buttons (possible Water proofing?), 12-16 hour battery life.
iPhone 6: IGZO IPS/OLED, Longer Battery Life, Screen larger
Laptops: Lower Prices, smaller bezels, Air getting retina, quad cores in all of them. ARM based Air that runs ARM OS X and gets 20+ hrs.
iMac: New design, with some pivot and height adjustments, user replaceable parts, higher resolution screens.
iPhone 6: IGZO IPS/OLED, Longer Battery Life, Screen larger
Laptops: Lower Prices, smaller bezels, Air getting retina, quad cores in all of them. ARM based Air that runs ARM OS X and gets 20+ hrs.
iMac: New design, with some pivot and height adjustments, user replaceable parts, higher resolution screens.