Xeptu,
Alliance were in Adelaide 10 days ago and interviewed a large number of REX pilots who had previously submitted CV’s before they advertised for crews in the Australian. If the Fokker 50 ground school is scheduled for mid to late May (2-3 weeks way) then those pilots should have been notified by now, in order for them can give the required notice.
The closing date listed in the Australian was the 4th of May, I guess any pilot who responded to the advert will not hear anything for a few more weeks, so Alliance must be running another ground school at a latter date for those pilots.