Flight schedules are posted fully in advance. CO does not necessarily release award seats at the same time that they set the schedules. In this regard they are different than most other carriers. Do not assume that you can call up at midnight 330 days out and have your pick of award seats - you will be very disappointed.

CO generally releases award seats for Asia in batches around 6-9 months in advance. No specific information about the rest of the releases (only revenue management really knows), but it is not a set schedule.