Just received mine.
Well, im one of those who really doesnt care much about the M1 and the upcoming "Pro Features".
I use my iPad 2018 12.9 most of the times just for web surfing and watching movies/tv shows, and i wasnt very pleased with the screen of the 2018 compared to my Oled Tvs.
What can i say. The new Mini Led screen is night and day compared to my 2018 ipad, specially when watching in a pretty dark room. iTunes Dolby Vision movies are looking amazing and a lot better. Really cool. But non HDR content in a bright room doesnt make a big difference.
The new iPad screen is a big upgrade for sure, but spending so much money just for better media cosumption, puh, still feels kinda crazy.