When is the retirement date for the Classic UI in the Purchase Orders area?

Now that Oracle has introduced Redwood UI into Purchase Orders as well, when will the Classic UI be retired, and Redwood UI be made mandatory in the Purchase Orders area?

For example, with Redwood UI in Requisitions (RSSP), the Classic UI will be retired from 25C, and only Redwood UI will be available. When will a similar transition happen for Purchase Orders?

Thanks in Advance