Citing pre-publication notes from DigiTimes — a notoriously spotty source for Apple news — The Motley Fool reports Apple has “plans to launch a 5.8-inch iPhone featuring rigid AMOLED display panels in 2018 or even earlier in 2017.” The report, cited as coming from Taiwan-based Apple supply chain makers, echoes previous rumors that Apple would be turning to LG Display and Samsung Electronics to supply the new screen technology for an…