There's only been rumbles of hiring starting up until about a few weeks ago. But now, classes have been announced and are starting at both the regional level and majors. UA just took 6 of our LCPs and several other training Dept pilots. The 3 big E3 employers (GoJet, Mesa and CommutAir) are already hiring, with CommutAir hiring close to 60/month, and GoJet confirmed to have approached E3 applicants.
The well of talent to draw from is already starting to run low, as not only will those 3 lose potential newhire talent from the pool to other carriers, but they are all about to suffer some significant attrition. E3s will most likely be back on the table soonest for those who already have their ATP, but I don't think it'll be long after before everyone else gets the invite.
The growing shortage is evidenced by the fact that several regionals are either paying for ATP CTP courses, offering signing bonuses again, or offering longevity match.
Watch this space, because it's going to heat up quicker than what most expect it will.