Dallas EP Cynthia Cidre has expressed confidence that the show will be renewed for Season 4.
Following the cliffhanger end to Season 3, Cidre spoke positively about a potential Season 4 pick-up, revealing that she already has a 60-page story bible mapping out the entire season, per EW:
As you know, we don’t have an official pick-up, but they like us a lot and so they’ve given us a lot of money to continue, so we still have our offices and our stages and the writers. I wrote a 60-page bible with all 15 episodes for next season already, because at a certain point, even before we shot the scene with the car exploding, I had to commit to that idea for season 4. Because that’s going to be at the center of the emotional turmoil in season 4 with Bobby and, “What the hell happened with my son? I know it was Nicolas who did this and he’s in Mexico.” And he wants to extradite him. And Elena is giving birth is our first episode. Everything that happens in that episode is really the what propels season 4.