The iPad Air 2 takes the title (from Apple's original Air) of Best Tablet You Can Buy. The updates aren't enough to force an upgrade from a 2013 Air, but it'll feel like a tablet from another planet if you're still using an original iPad or iPad 2, or an early Android.
Somehow; even thinner than ever; Very snappy performance; thanks to A8X chip upgrade; Fingerprint login; Better cameras
The familiar iPad-family gripes (no MicroSD card slot; reliance on iTunes; Rear camera lacks a flash; Physical mute/orientation-lock switch has been eliminated