Apple is expected to launch bigger iPhone and iPad models this year, as well as a first ever smartwatch model – unofficially referred to as the iWatch – and DisplaySearch (via CNET) already has some predictions regarding the kind of displays Apple may use on its upcoming devices. The researchers mention two iPhone 6 sizes including 4.7 inches and 5.5 inches, which could have LCD displays with 1600 x 900 resolution (386 pixel-per-inch density or PPI,) and 1920 x 1080 resolution (401 PPI), respectively. Moving to the bigger 12.2-inch iPad model, DisplaySearch says the tablet could sport an LCD screen with 2732 x 2048 resolution (265 PPI), while the iWatch is expected of pack either a 1.3-inch 320 x 320 (348