Speculation has Apple testing out three different sized prototypes,1.4 inches, 1.5 inches and 1.6 inches. Besides LG and RiTDisplay, Samsung was another company allegedly approached by Apple to produce the display for the Apple iWatch. But Samsung apparently wanted to keep its production in-house to be used for its own smartwatch, the Samsung Galaxy Gear.
While some believe that the Apple iWatch could be launched before the end of the year, rumors of an issue with overheating are making some analysts push back their estimate as to when the device will launch to sometime in 2014. And with some owners of the new Apple iPhone models complaining that their handsets get too hot, that is a problem that cannot be tolerated on a watch that touches the skin. In other words, Apple will have to resolve this issue before iWatch is launched.
source: KoreaHerald via UnwiredView