Mary Jane No Longer In "The Amazing Spider-Man 2" But Will Be In The 3rd Film With New Actress?

So even though Marc Webb and the crew have already filmed scenes that feature new Mary Jane played by Shailene Woodley, Webb has confirmed that those scenes won't make it in the final film. Sony have said that the character WILL be introduced into "The Amazing Spider-Man" franchise at some point, assumed that it's the third film as Emma Stone's Gwen Stacy is rumoured to get killed off in the second film. 
Here's what Marc Webb said on the decision on removing her scenes from the highly-anticipated sequel, 

"I made a creative decision to streamline the story and focus on Peter and Gwen and their relationship. Shailene is an incredibly talented actress and while we only shot a few scenes with Mary Jane, we all love working with her."

It's rumoured that Sony will not be bringing Woodley back for her short-lived role as Mary Jane at all for the third film. It's been said that they are searching for a new actress and that actress could've possibly be found already.

Actress Sarah Gadon has joined "The Amazing Spider-Man" franchise but her role hasn't been announced yet. Fans are guessing she could be the new new Mary Jane in the third film and onwards. This is assumed because Woodley will probably be busy with her upcoming film and it's planned sequels, "Divergent". 

More On-Set Pics From "The Amazing Spider-Man 2" Featuring Gwen Stacy And Mary Jane!

Mary Jane Been Cast For "The Amazing Spider-Man 2 &3"

It's been announced that "Descendants" star, Shailene Woodley has joined the cast of "The Amazing Spider-Man 2" as the new rebooted version of Mary-Jane Watson. It's been reported that she will appear in a cameo near the end of the second film before becoming lead female in the third. I think she is stunning looking and would be great for the part.
Rumours came out a few weeks back saying that Emma Stone's Gwen Stacy was set to be killed off during the next film, but nothing was confirmed. It's still not been confirmed if she will be killed off in the second one or be kept to die at the beginning of the third. Stacy is killed by the Green Goblin in the comic books, so that could be kept for the third and final film in the rebooted trilogy.
This is my theory because Electro is strongly rumoured to the the second films main villain, but it's also rumoured that Norman Osborn will pop up too to kick things off for Stacy's death, which I'm seriously guessing is the third film.