USB C... I've been waiting for this for many years. I travel a lot, and everything (2x headphones, nintendo, macbook, camera, etc) is on usb c.
2nd big thing was the gaming ability, not super hyped about RT but Death Stranding and Mirage coming to iPhone? that's a good start. (can't wait to pair it with a controller like razer kishi or PS backbone). I just hope we get more quality games and shift away from pay to win. I'd be happy to pay 20-50 for a game instead of having 5 types of coins and diamonds and loot boxes. At the moment I only play Oceanhorn 2 on phone, which is a decent game, no lootboxes (it's also on apple arcade)