Things change all the time, and baring that in mind, crunch the following figures:
A short while ago it was stated in some company communication that there would be a net increase of 60 aircraft between now and 2020. If one divides the current number of pilots by the number of aircraft, and divide the result by two, the result will be the approximate number of captains required by 2020.
My numbers indicated approx 600. So, if one is not in the top 600, there will be no upgrade before 2020.