glad you found some availability, air china website says only the next 6 months is bookable.

It wouldn't be full already would it? - just not available for redemption.
Would it become available later and would I be able to upgrade the class later if I booked it now?

I want to try for

LHR-BKK-HKG-land-KWL-PEK

in biz if that's possible!