Apple introduced an iPad Mini, a fourth generation iPad, a new version of iBooks, a new version of iBooks Author, and various Macs, in a press conference today.

The iPad Mini is “as thin as a pencil.” It has a 7.9-inch screen and is 7.2 mm think. It has the same resolution as the iPad 2 at 1,024 x 768. It is “as light as a pad of paper,” said Apple’s senior vice president of worldwide marketing Phil Schiller.

The idea behind the design was not to downsize an iPad, but to redesign a new experience with the smaller screen in mind. In the presentation, Schiller pointed out that the display area on the iPad Mini is a third larger than that on its Android competitors and 50 percent larger than Android for surfing the Web. ”The iPad Mini is every inch an iPad,” said Schiller. It goes on presale this Friday and starts at $329.

The fourth generation iPad  is faster and lighter than previous models. It comes with a new A6X processor, a 720p Facetime camera on the front of the device and the same new image processor and lightning charger found on the iPhone 5.

Apple live streamed the event on Apple TV. During the event, Apple CEO Time Cook said that Apple had sold its 100 millionth iPad last week. “That’s 100 million in just two and a half years,” said Cook. He also pointed out that iPad accounts for 91 percent of web traffic on tablets. Read more