When does Cathay Pacific award seats become available?

Am trying to book business class HNG to BNE for April next year but Alaska phone bookings say that only economy seats are showing availability at this stage.
Does anyone know when award bookings for Cathay Pacific business class seats become available. I understood that their business award bookings were quite good - has this changed?
Alaska say that I can book economy and upgrade using points when (if?) business class is available. Should I take this path?
Thanks to anyone who can help

Hi Morgz45,

Alaska Mileage Plan in general sees one less seat than what you see on Cathay Pacific award seats inventory.

How many seats are you after? Cathay Pacific Asia Miles open flights 360 days in advance for booking/redeeming. You might have missed the first rush. Usually, I would recommend waiting till 30 days or less from departure date for later release award seats. However, Asia Miles program is changing as of June 22. We will have to wait and see what happens to the inventory for AM members and partner airlines like Alaska Mileage Plan.