Let any speculation cease: Elena will most definitely transition on The Vampire Diaries Season 4 premiere.

There was really never doubt that the final scene of this month's finale would lead to that development, but Nina Dobrev made it especially clear on The CW Upfront red carpet last Thursday.

"I'm vampire-squared now," the actress told Us Weekly, referring to both Elena and Katherine. "I'm playing two vampires, so my challenge is going to be making them different, as I have thus far. Before it was because one's a vampire one's a human - it was easy - and now I have to try and make Elena a vampire."

Dobrev added that the main struggle for Elena will be holding on to her "humanity." As well as still having to figure out with whom she's meant to be: Stefan or Damon?

"Finding out that she chose Stefan even though she actually met Damon first... there's so much going on and there are so many emotions," Dobrev said. "It's going to be a new beast going into Season 4."

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.