Topeka Capital Markets analyst Brian White is out with another research note today sharing some highlights from day seven of his trip to China and Taiwan to talk with technology companies and other sources. Based on discussions with officials at an unnamed "tech-supply chain company", White now believes that Apple's iPhone 5S due for release later this year will arrive in two or possibly even three screen sizes.We also walked away with the view that Apple will release the iPhone 5S in at least two screen sizes this summer and possibly three. We continue to target July as the launch date. Essentially, we believe Apple is coming around to the fact that one size per iPhone release does not work for everyone and offering consumers an option has the potential to expand the Company’s market share.White also believes