Are there any mandatory redwood features for PDH in 25A?

Summary:

Are there any mandatory redwood features for PDH in 25A?

There are many listed as "will be enabled by default" from 25A. But are any of those mandatory or can we still continue to use the prior version of the page?

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Version (include the version you are using, if applicable):

25A

Code Snippet (add any code snippets that support your topic, if applicable):