iPad Air :
One reason for the phenomenal success of the iPad has been Apple's ability to pack speed and versatility into a thin, light body with long battery life. And in a stroke of marketing genius, a largely similar product is now rebranded, making it easier for consumers to notice that they don't have the latest model.It doesn't do everything a laptop does, but for many common scenarios, it has replaced the laptop as its owners go-to device. That's why the company has sold 170 million iPads in just three and half years.
It plans to start selling its fifth-generation full-size model, called the iPad Air, and this one significantly extends the iPad's advantages, at the same $499 base price of its predecessor. In a feat of design and engineering, Apple has slashed the iPad's weight by 28 percent, make it 20 percent thinner and 9 percent narrower, while increasing its speed and retaining the brilliant, 9.7-inch Retina display.
The one part of the iPad Air that isn't any thinner or lighter is its price, which starts at the usual $499 for a 16GB WiFi-only model. From there, the MSRP goes as high as $929 for the most expensive configuration (that's the WiFi + Cellular model with 128 gigs of storage). As always, the Air is entering a highly competitive market just in time for the holidays. So will its strong performance and super-thin frame be enough to make you upgrade come November 1st.
Features:

Software : The Air comes with the latest version of iOS 7.0.3, which is available for every device capable of running the new love-it-or-hate-it operating system.
Wi-Fi and 4G : Apple has upgraded the wireless inside the iPad Air, with MIMO technology now providing faster and more reliable Wi-Fi. It still uses the slightly older 802.11n technology, though rather than the new, faster 802.11ac standard.
A bigger improvement comes on the Wi-Fi + Cellular version, which now works on all 4G networks in the UK (the iPad 4 wouldn't work with any 4G LTE networks).
Camera : The iPad Air features a 5-megapixel rear camera that can capture video in 1080p. The device's front 1.2-megapixel shooter can capture video in 720p.