With a most likely release planned for the next third quarter of 2014, they are building a better touch screen sensor that can introduce fine pressure sensitivity for their later devices to be introduced after that.
These new curved display iPhones for the year 2014 are rumored to come in with 4.7 and 5.5-inch displays; and also meaning that Apple is going to introduce not only one, but two of their different models at the same time. We have seen various reports of Apple Inc. working on different models of their large-screen devices in the past. But this is for the first time we really heard some firm information with a possible release date for those said devices and that too, from a source as generally reliable as the Bloomberg. Recently, a Japanese iOS rumor-based site claimed about a September launch for a probable large-screen iPhone late in the October.
Apple Inc. has also introduced their precedent for doing two models of new iPhone at once this year with their iPhone 5s and the iPhone 5c models. So this idea can make some sense. But also, two uncommon and new larger-screened devices from Apple at once might seem like a stretch. Also, the sensor developments of Apple Inc. are potentially even more interesting to those people who find this current screen size of 4’’ of the iPhone adequate; the true pressure sensitivity might make drawing and handwriting applications on the next iPhone and iPad even much better.
Apple could mostly sell those devices as professional-level artistic devices if it gets introduced in those kinds of features, just in addition to making things better for everyday users who want to make notes for their day to day activities.