In Pictures: First look at the new iPad - What's new, unchanged and still missing

A rundown of the Apple tablet's key features

New: Bluetooth 4.0

Apple was the first company to introduce the latest version of Bluetooth, on iPhone 4S and MacBook and Mac Mini. Perhaps the key change with 4.0 is its extremely low power demand. Technically, the new iPad is what the Bluetooth SIG calls a "Bluetooth Smart Ready" device: the 4.0 radio can talk with devices that use earlier Bluetooth versions, and talk with new "Bluetooth Smart" devices that have a 4.0 radio that can only talk to another 4.0 radio (this latter group will be small, battery-powered smart sensors and the like).

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