According to reporting Rosetta will still be supported for old games that rely on Intel code

> But after that, Rosetta will be pared back and will only be available to a limited subset of apps—specifically, older games that rely on Intel-specific libraries but are no longer being actively maintained by their developers. Devs who want their apps to continue running on macOS after that will need to transition to either Apple Silicon-native apps or universal apps that run on either architecture.

https://arstechnica.com/gadgets/2025/06/apple-details-the-en...