Helen Flanagan has reportedly already met with casting directors in Los Angeles about joining the project. Here's what an unidentified source had to say about her meeting.
"They felt she had a unique look, great figure and natural charm on screen."
It isn't known if Kate Upton has met with casting directors or producers yet. Daniel Craig is returning as 007, with Skyfall stars Ralph Fiennes (M), Naomie Harris (Eve Moneypenny) and Ben Whishaw (Q) reprising their roles.
Sam Mendes is directing from a screenplay by John Logan, although it isn't known when production may begin. There is also a rumor that the sequel may be called Devil May Care, after Sebastian Faulks' 2008 novel that commemorated the 100th anniversary of James Bond creator Ian Fleming's birth.