Apple is constatnly working on improving their products as much as they can.
They are known for making device, but for a very high price.
The prices might get lower, because Apple is making a couple of changes and is testing the E ink foldable displays.
E Ink Corporation is one of the biggest electronic ink display makers. The company also makes color e-ink panels which are the type Apple is allegedly interested in and are said to be testing them right now.
What makes those screens so special?
E ink screens have low power consumption, at the same time however they have a slow refresh rate.
We cannot wait for the official information from Apple which should come really soon.