Kuo believes that the 31.6-inch screen”will aim an extremely high-end position” and feature an”all-new design.”
Apple plans to establish a trio of fresh goods with Mini-LED backlights over the next two years, including a 31.6″ display in the next or third quarter of 2019, a 10-12″ iPad in late 2020 or early 2021, along with a 15-17″ MacBook in the first half 2021, according to renowned analyst Ming-Chi Kuo.

Apple’s stopped Thunderbolt Display

In a prior study note, Kuo predicted that Apple would establish both a 31.6-inch screen and a 16-16.5″ MacBook Pro in 2019, so it’s not completely clear if the 15-17″ MacBook identifies another notebook or if Kuo now considers the 16-16.5″ MacBook Pro is coming a few years later than he initially anticipated.
An excerpt from Kuo’s research note, acquired by MacRumors:

We believe that miniature LED, in comparison to OLED, will probably be much more convenient solution to offer wide-color gamut (WCG)/high-contrast/high dynamic range (HDR)/local dimming features because of its longer lifetime and no burn-in problems for Apple’s medium- and – large-size products targeting in productivity positions.