This is explained very simply: Apple is implementing these relaxations only for European users, as it is obliged to do so under the Digital Markets Act (DMA) adopted by the European Commission.
The browser will be powered by artificial intelligence; Nothing about functionality is disclosed. According to Opera developers, the browser will be ready “in a few months,” possibly pointing to a March release when DMA will come into play.
“As Europe’s leading browser developer, we welcome the changes to the DMA to encourage competition and provide users with more diverse browser options on iOS. We plan to implement this idea with Opera One for iOS, which is focused on artificial intelligence. Additionally, we are pleased to see confirmation that Apple will also be bringing a browser selection screen to iOS, making it easier for users to choose their favorite default browser on their mobile devices,” said Jorgen Arnesen, Opera’s vice president of mobile.
Source: Ferra

I am a professional journalist and content creator with extensive experience writing for news websites. I currently work as an author at Gadget Onus, where I specialize in covering hot news topics. My written pieces have been published on some of the biggest media outlets around the world, including The Guardian and BBC News.