Employers can no longer include a broadly written confidentiality clause that requires you to keep mum about the terms of your severance agreement. And they can no longer include a broadly written non-disparagement clause that prohibits you from discussing the terms and conditions of your employment with third parties.
https://www.cnn.com/2023/02/22/success/severance-agreements-rule-change-from-
https://www.cnn.com/2023/02/22/success/severance-agreements-rule-change-from-nlrb