Slow Roll Out of Redwood Reqs? 25C

Summary:

Our client feels most comfortable with a slower roll-out with Redwood Reqs in 25c. They'd like to continue using it in a non-prod environment for a few more weeks before pushing it to PROD. I just want to confirm that with the 25c update (Aug 16th) - Redwood Reqs will not be auto-enabled or auto-opted in? I want to ensure them that they can continue using classic for the next couple of weeks until they are ready for the full roll out of Redwood reqs and not be forced into Redwood on Aug 16th. Can someone confirm my understanding is