The Acquisitions Directorate (CG-9) has an excellent post about the upgrades that bring the MH-65s up to the “Echo” standard.
While there is a long term intent to ultimately move to an all H-60 fleet, the H-65 fleet still has a future.
In conjunction with the upgrades, the Coast Guard is completing service life extension program activities on the Dolphin fleet to replace five major structural components: the nine-degree frame, canopy, center console floor assembly, floorboards and side panels. These mission-critical improvements are designed to extend the service life of the helicopter by 10,000 flight hours.
The Coast Guard plans to convert all 98 aircraft to the MH-65E configuration by the end of fiscal year 2024.