Apple Inc plans to launch smartwatches with multiple screen sizes and designs this fall, the Wall Street Journal on Friday cited a person familiar with the matter as saying. Taiwans Quanta will begin mass production of Apples first smartwatches from July, in time for an October launch, several sources familiar with the matter told Reuters on Thursday. The Wall Street Journal on Friday also cited sources saying Quanta would manufacture the device. One of the sources told Reuters on Thursday that Apple expects to ship 50 million units of the so-called iWatch within the first year of the products release, although these types of initial estimates can be subject to change.