I don't know about all the hatcheries but here in Ohio Meyer Hatchery is at the end of the hatching season. I received chicks 2 weeks ago and had to pick what was available. Most breeds where sold out for the season. They told me they where only hatching the most wanted breeds till next Feb. Others here will know more. I only keep 15 or so yearly.
(Hatching season around here is the end of November)