This would be the standalone Guru screen to cooperate with the new Mac Pro. It s certainly likely to be published in June, In case it ’ s to ship in Q3 then.

 ★ 
Benjamin Mayo, writing for 9to5Mac:

The merchandise of apple interest in technology. Kuo says that
Apple will establish a 31.6-inch (6K resolution) external screen in
the next or third quarter of 2019 plus feature a mini-LED
backlight.