They are not phasing it out for virtualization.

Only reference I can find is:

"Starting with computers using macOS 28, Rosetta functionality will be available only for certain older, unmaintained games that rely on Intel-based frameworks."

https://support.apple.com/en-us/102527

And

"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://developer.apple.com/documentation/apple-silicon/abou...