Still not too late for standard winter wheat and turnips. Also, a brassica mix could still go in, although it would have been best to have planted those already. I planted brassicas last year in about the 3rd week of September and then didn't get any rain on them to speak of. I still had some growth that attracted deer as late as early this past Spring.
I am also going to try some rye this Fall, just to see what happens and if there are any preferences.