Has anyone gotten through to anyone at Aer Lingus that can clarify/explain when business class reward flight seats get released??

Looking to fly from DUB-LAX at the end of April or early May. All I am currently seeing right now for this route is business class seats for flights up to about mid-late January with about 2-4 seats on each flight. However, I saw DUB-JFK had some going into mid February and was wondering why the difference in posting for the same date ranges??

Any help/clarification would be helpful!