As we know Apple always left references for future iOS device in the file system of iOS. Recently Apple has released iOS 5.1 beta 2 for iPhone 4S, iPhone 4, iPhone 3GS, iPod touch 3G, iPod touch 4G, iPad 2 and iPad. This beta version of iOS 5.1 includes reference to iPad 3. According to TUAW, they have discovered reference to iPad 3 in the 2nd beta version of iOS 5.1. TUAW has also posted a screenshot which shows the reference to iPad 3 in iOS 5.1 beta 2. The screenshot shows device ID of 1. You can see the screenshot posted below.
This is not the first time that the reference to iPad 3 discovered in the beta version of iOS 5.1. Earlier 9to5Mac has also discovered references to iPhone 5 and iPad 3 in iOS 5.1 Beta 1. Both the references has device ID of 1 which indicates that Apple will launch iPad 3 in the next year. The reference to iPhone 5 is not available in the 2nd beta version of iOS 5.1. This does not mean that Apple will not release iPhone 5 in the next year. Recently Japanese blog Macotakara has reported that Sony and Hitatchi have started shipping 4-inch displays for iPhone 5 and panels for iPad 3. CNET reported that the 3rd generation iPad will feature QXGA 2048×1536 Retina Display and the production of QXGA Retina Display has already started by the display suppliers for iPad 3.
Forbes has claimed that Apple will use modified IGZO technology to produce high-resolution display for iPad 3, so that the it will be thinner and it will consume lower power. They have received this information from Jeffries analyst Peter Misek. According to Peter Misek, Apple has invested $500 million to $1 billion in new equipment which will allow Sharp to produce thinner high-resolution displays for the 3rd generation iPad that will consume lower power. Apple and Sharp will use modified IGZO technology to produce high-resolution display for iPad 3. It is expected that Apple will launch Retina Display enabled iPad 3 in February.