I think it's the last one. Frankly, I don't know how many more twists and turns they can do and still keep the show credible. While I loved the cliffhanger, any more seismic shifts like that and I think it will undermine everything that's happened in previous seasons. I still love the show and will watch it until the end, but come on! Let's not get too crazy here.
Plus, after having the baby, Jen may not want to keep doing stunts for much longer or a television show. She'd probably get more time off if she just did movies.