The new OLED G6 panel that Apple's upcoming Watch Series 7 is likely to come is the main cause of the production delay, according to Kuo. Apple has not used this panel before and that is why there are issues arising in the production. The cable design and the durability of this display are entirely new for Apple and that is what needs more attention. So why is Apple going through all that trouble for the OLED G6? That is because the OLED G6 is easier and cheaper to manufacture, which is going to prove to be efficient for Apple in the long run. This teething issue is going to be worth it then.