I can tell you they will be hiring almost non-stop for some time to come. They pick up the Lufthansa contract in Arpil and if I remember correctly, that is 4 freighters, up from 2.
However, what is driving it is the fact they are having crews quit faster than they can train them. The "new and improved" contract went over like a fart in church. Most pilots and f/e s took it as an insult. That coupled with the fact that there are no contract f/o upgrades, Icelandic only, makes it very difficult to stay. In addition, pressure to bust duty limits, not write things up take their toll at the end of the day.
