Comment by pentagrama

Yes, you’re right—there doesn’t seem to be any statement explicitly saying that the legacy free edition will always have the same features as the Business Starter plan, at least not that I could find.

However, I noticed that on my legacy free edition, new features were integrated around the same time they were shipped to the Business Starter plan. For example, when the Gemini app was launched for Workspace, it was added to my panel: https://imgur.com/a/QvROTiD

Interestingly, when I went to the admin panel to take the screenshot, I saw a banner with the OP announcement: https://imgur.com/a/CDgdrlB. It does say "en todas las ediciones de Workspace" (in all Workspace editions), but maybe not the one I currently have, haha (legacy free edition).