I know there is no official end date for CEP in AE (or in any other Adobe app for that matter), and that you cannot give one also.
How about somethie like this:
"CEP will be supported in AE till the end of 2024, at least"
Is this somethong you can commit to?
Trying to prepare a long roadmap ha ha...
any other info regarding roadmap you can give will be welcome - thnx!