The series is definitely returning on March 29th at 8/7c! It has been a bit of a break, so I want to make sure no one misses it I forgot a lot of what happened in the season finale, so I've been catching up online. I just checked and they still have all the episodes online, so if you need to catch up, I suggest now.
I also just read that from 3/22-3/29 they will be free on iTunes as well. I think the free iTunes episodes are pretty sweet. It's pretty cool they're helping out with that.