To date, new hires have not been going to the 70-seater. I thought i read somewhere on this forum that anyone with a seniority of March '02 or later was not eligible for a junior assignment. Of course, in this business, things can change. I would plan on going all the way through CL-65 training, though. The possibility for getting junior manned into the airplane later this year is very real for all of us bottom feeders, though.
Class seniority is by age.