Sources for Reuters are supporting Wall Street Journal claims that Apple is using 4-inch displays for the next iPhone, and has already begun to place orders for the new parts. As with the earlier report, Reuters says that LG Display, Sharp, and Japan Display are handling production, which is allegedly in early stages; full production orders could begin in June. iPhone assembly could start as soon as August, if Apple follows normal patterns. One source comments that it's still uncertain what share of display production each supplier will have.