There is no set air/stream date. Unless they ultimately decide to cancel SNW outright, once the strike ends, they'll shoot and produce 10 episodes like all their other streaming series.Considering the news of Prodigy yesterday, I still think it will get a third season, but it might be a short third season (That, and the writers strike). If they do have a short season planned, I want them to do a Torchwood: Children of Earth type season and extend the episodes.
Even as they are shopping Prodigy around, they haven't cut any eps for the post production pipeline.