They are currently hiring for spots in a November class, which is supposed to be the last one for the year due to the fact that the Caribbean ramps up in December. However, I spoke with a recruiter the other day who said there may be classes in January and February to cover for attrition/prepare for the summer.
Long story short, if you want to work at Cape Air, apply now because the pool is pretty much empty and they are going to need people...