However, the cost and complexity of producing such a large OLED panel could still make an OLED iMac an expensive proposition. According to The Elec, LG Display is working on five-stack OLED panels after beginning production of four-stack OLED TV panels in 2025. But with Apple reportedly continuing to investigate advanced OLED technology, it looks increasingly likely that an OLED iMac is a question of when, rather than if.