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Apple to switch to OLED displays for iPads and MacBooks - Nikkei Asia
(asia.nikkei.com)
This is a most excellent place for technology news and articles.
To be nitpicky, they separated out iPadOS from iOS a while back. The two share many features still but iPadOS can do more.
Still not full MacOS level though, even on the m1/m2 iPad Pro models. Disappointingly.