Many fans are now both sad and excited for "Doctor Who." The reason being is that, its current lead star, Peter Capaldi, is now in its last year run as the time-traveling Time Lord, which is why avid followers of the long-running BBC Sci-Fi series are now starting to speculation on who might be the next actor who might take the mantle in "Doctor Who" season 11.

Unfortunately, "Doctor Who" incoming showrunner, Chris Chibnall, has seemingly hinted that the script is the top priority during his talk with the Telegraph. Further saying that the casting of the actor/actress that will play the part in "Doctor Who" season 11 will begin as soon as the writing team finishes the script.

"You couldn't go out and cast an abstract idea," the showrunner said. "The creative possibilities are endless, but I have a very clear sense of what we're going to do, without even knowing who's going to play the part."

Many enthusiasts are hoping to see a female Doctor in "Doctor Who" season 11. But unfortunately, Chibnall told the publication that it's too soon to decide on what the Time-Lord's gender or race would be next season, Digital Spy reported.

A lot of talented actresses have already been named by fans who could potentially play the first female Doctor in "Doctor Who" season 11. The favorite one, so far, based on the odds from the online betting site, is Tilda Swinton, who played as the Ancient One in "Doctor Strange."

Current Doctor, Capaldi, and previous lead star David Tennant (10th Doctor) have also pitched their candidates on who should play the role in "Doctor Who" season 11. The actors' candidates are Frances De La Tour and Olivia Coleman, respectively, according to reports.

"Doctor Who" season 10 will premiere this April 15. Capaldi, on the other hand, will pass the sonic screwdriver to the next Doctor after the show's 2017 Christmas Special.