Apple will announce three new iPhone models this year, according to a questionable new report from China and Taiwan. There will be a 4-inch-screened iPhone 5S and a supposedly larger-screened 4.8-inch “iPhone Math” model before the end of June, while a third model with a 12-megapixel camera will arrive before Christmas, the report claims. There have already been rumors of an iPhone 5S, as well as a new low-end iPhone model, but iPhone…