AIUI they intend to retire support for x86 macOS apps in a few years, but Rosetta will remain as a low-level component so that things like Crossover and Parallels can continue to work. Maybe not forever, but there's no immediate threat of it being EOL'ed.

> Rosetta was designed to make the transition to Apple silicon easier, and we plan to make it available for the next two major macOS releases – through macOS 27 – as a general-purpose tool for Intel apps to help developers complete the migration of their apps. Beyond this timeframe, we will keep a subset of Rosetta functionality aimed at supporting older unmaintained gaming titles, that rely on Intel-based frameworks.

https://www.macrumors.com/2025/06/10/apple-to-phase-out-rose...

i’m not sure how end-of-life it will actually be because rosetta is used in apple/container and seems to be a large part of the virtualization stuff apple’s built in the last few years