While I had originally hoped that this season would end with Spartacus' escape from the ludus, paving the way for season 2 to focus on the beginnings of the slave uprising, it's starting to look like things'll stay in the ludus for the time being.
I just can't see them wrapping up all the loose ends sufficiently with only an hour left in the season; it'd feel rushed. Instead, I'm guessing the finale will instead establish the planning and groundwork required to engineer such an escape. Season 2 could therefore focus on the two sides of the same storyline - Spartacus continuing to earn Batiatus' trust and respect in the arena while secretly recruiting gladiators like Crixus and Doctore to his side for the eventual escape.
Either way, the week-long wait until the finale is going to be excruciating.