Lyman,
On September 17 the GE spokesman told AIN that all GEnx engines in the field would have undergone inspection by the time the FAA issued its AD this week. The inspection is accomplished on-wing, no need for engine removal unless something is detected.
BTW, electroless plating is a process method of usually applying nickel to a component that has experienced wear, restoring the surface and dimensions to the original limits. Relative to vapor deposition, I am not sure of the exact process used. Since shafts are hollow, the coating is applied to both OD and ID to minimize corrosion from oils, etc., that are vented through the shaft interior.
TD