| Final Season | Certain to be Canceled | Watching | Renewed | 
| Beauty and the Beast | Significant Mother | Containment | Arrow | 
|  |  |  | Crazy Ex-Girlfriend | 
|  |  |  | DC’s Legends of Tomorrow | 
|  |  |  | iZombie | 
|  |  |  | Jane the Virgin | 
|  |  |  | Reign | 
|  |  |  | Supernatural | 
|  |  |  | The 100 | 
|  |  |  | The Flash | 
|  |  |  | The Originals (F) | 
|  |  |  | The Vampire Diaries (F) | 
Since all eleven shows currently on air were renewed, it's time to find some filler headlines.
As it becomes more apparent, there still hasn't been any news on Significant Mother. I put it back on the table for one simple reason.
Significant Mother was the lowest rated WB show last summer, despite being a WB/CBS coproduction. Because of this, it has been certain to be canceled for the longest time. The question is, has it already been canceled?
New rule: All shows that haven't premiered yet will be in the 'Watching' column until after the premiere.
Containment will premiere in mid-April, and I'm placing it on the bubble. Despite getting The Flash as a lead-in, it looks like the network has very little faith in the show, according to TVBTN commenters. Hit clue: limited series.
Here's the definition of a limited series.
Limited series - A show that gets a limited number of episodes per season, not number of seasons. Typically limited series have less than 22 episodes.
Here are some examples. The 100 has been a limited series throughout its run. iZombie has been limited so far due to scheduling. Even Crazy Ex-Girlfriend can be described as limited in nature because of the partial backorder.
If a limited series garners ratings worthy of a renewal, it will be renewed. No ifs, ands, or buts.
Folks, just because a show gets retooled doesn't mean that it's necessarily a bad sign. FOX's Lucifer was retooled, and so far, it is getting renewal worthy ratings with Gotham as a lead in.

