In November, Apple announced that the iPhone would support the cross-platform messaging standard RCS (Rich Communication Services) in the Messages app starting “later” in 2024, and Google has now revealed a more narrow timeframe.
In a since-deleted section of the revamped Google Messages web page, spotted by 9to5Google, Google said that Apple would be adopting RCS on the iPhone in the “fall of 2024.” This timeframe suggests that RCS support will be added to the iPhone with iOS 18, which should be available in beta in June and released in September. At the latest, support should be added in iOS 18.1, which is likely to be released in October.
Read more at MacRumors.com