Will Testflight require Xcode 14.1 after April 2023?

Hi I can't find this clarified anywhere--I see the note that APP STORE SUBMISSION will require Xcode 14.1 (https://developer.apple.com/news/?id=z1erkhzr#) starting in April, but it's unclear whether you can still submit Testflight external test builds that were created with a lower version of Xcode. Will Testflight still accept Xcode 13 .ipas? Thank you!