Nope, there was an article that I stupidly clicked on that says they've decided on the three new permanent staff. Semi-luckily, I didn't read it, but I know who one of them is because they also showed a picture

Based on the last episode, I think I know who the other person is. I think Foreman, Chase, and Cameron are sticking around, though, I'm not sure why they're sticking with having so many characters when the regular cast could be around.
I thought last episode was great. A lot of attention to medical discussions, and quite a thriller especially near the end. A good episode, and looking forward to the next one.