Hiya happy girl,
If the plants are of food size plant them out. Does the label say Helleborus NIGER? This is the Christmas rose. It flowers not too lomg after Xmas. One problem with,this hellebore....well two I guess. Its flowers are usually damaged by rain splashed soil so plant them with some grit or gravel around them. I think they are best in pots, again with grit as a mulch. Secondly, they are temperamental things and seem reluctant to flower well....or even make an appearance....in their second year.
Sillly me......just re read your post and I can see they are seedlings so no, don't plant out until the spring. They won't flower for at least another 18 months ...prob longer.