Apple has updated its Case Design Guidelines document for accessory manufacturers to add detailed specifications for the new iPad Air and Retina iPad mini. Check out the images below for schematics of the iPad Air Wi-Fi and Cellular models:

Here are previews of the iPad mini with Retina display WiFi and Cellular models:

Apple has new Smart Cover and Smart Case accessories for the iPad Air and Retina iPad mini, ranging from $45 to $89 in Canada.

Back in September, Apple similarly posted design schematics for the newly released iPhone 5s and iPhone 5c.