I doubt it will ever fully come to iPhone. The reality is most people don’t know about it or wouldn’t use it to begin with. Think about it what are you really gonna use with it? It can be used to charge some smartwatches that can already last a full day if not more on a charge, earbuds also last for a long time and charging another smartphone is silly and painfully slow.

So no I doubt it will ever come and most won’t care if it does because it’s honestly a gimmicky feature that’s essentially a cool party trick. Oh and to clarify since the iPhone 12 reverse wireless charging tech has already been present and in use, for example when using a MagSafe battery pack and it’s attached to the phone if you plug the cable directly into the iPhone the phone will charge first then the phone will wirelessly charge the MagSafe battery pack.