This one sure faded from the news. You'd have thought they could rule a drone strike in or out pretty quickly, based on marks on the nose and probable pieces of the drone inside the nose cone. This is one of those situations where you'll never hear anything more about it if it's ruled not to be a drone strike.
Here's one that was "seemingly" and Open-n-Shut case but still took almost 3 months from incident until report and they knew the culprit within a few hours.
NTSB Finds Drone Pilot At Fault For Midair Collision With Army Helicopter