I too would be interested in the source of the new recommendations as I would like to read more in depth.

There is a clinical study underway at multiple sites around the USA that is sponsored by ECOG-ACRIN Cancer Group (Eastern Comprehensive Oncology Group-American College of Radiology Imaging Network). The study is EA2185 (https://ecog-acrin.org/clinical-trials/ea2185-pancreas-cancer-prevention/). The purpose is to evaluate two surveillance methods with the objective of which provides better information and a secondary objective of ensuring no patient undergoes an interventional procedure that is unnecessary.