Does the latest version of CiviCRM accommodate PayPal's changes to its dispute tracking?
I received the same message (I'm using PayPal Standard with CiviCRM on Drupal). I don't believe we need to do anything about it, because CiviCRM doesn't interact with PayPal's dispute process. My experience has always been that if a payment is reversed in PayPal, the reversal is not automatically reflected in CiviCRM -- instead, I have to manually edit the CiviCRM contribution record to note that a reversal took place.

As I mentioned, I'm on PayPal Standard. I don't know whether PayPal Pro would be different in this regard, but I doubt it.