Tablet operating system market share

Predicted 2014, worldwide

Android iOS Windows
Shipments 130.1 million 124.3 million 8.9 million
Market share 49.4% 47.2% 3.4%

2013's new iPad Air

Starts at $499.

Here's how this fifth-generation iPad compares with its most recent predecessor, which was released one year ago. That fourth-generation model is retired, with the older iPad 2 (which does not have a Retina display) now selling for $399.

Camera
5-megapixel camera.

Battery life
10-hour maximum battery life.

Screen
Same Retina display as the iPad4. The other full-size model, the iPad2, does not have a Retina screen.

Weight
Now 0.4 pounds lighter.

Thickness
Now .29 inches; was .37 inches.

Processing
Now an A7 chip; was an A6X chip.

Color
Back of the black version is now "space gray.”

Wifi
Apple promises twice the WiFi performance of its predecessor thanks to a second WiFi antenna.

Data service
The new version is compatible with more world cell networks.

2013's new iPad Mini

Starts at $399.

The first iPad Mini was released last year. It’s still available for $299.

Camera
5-megapixel camera.

Battery life
10-hour maximum battery life.

Size
Same as original iPad Mini.

Screen
The first Mini with a Retina display.

Processing
Now an A7 chip; was an A6X chip.

Color
Back of the black version is now "space gray.”

Wifi
Apple promises twice the WiFi performance of its predecessor thanks to a second WiFi antenna.

Data service
The new version is compatible with more world cell networks.

SOURCES: Apple and Gartner research.