I know that they are hiring for the Saab currently, and I do believe SGT is correct about the Q ... we are not getting anymore Qs for a long time (and by that I mean a year), and the only reason we would hire more FOs is if we had FOs quit. We had 4 FOs quit on the Saab in IAH over the last 2 months alone. That, combined with the word from management that they are holding one upgrade class a month, with 4 per class, for the Saab, they will be hiring for the Saab for at least the next month or two I would say.
BTW, what airlines allow you to keep your senority?! I've never heard of such a thing.