The Breaking Dawn red carpet premiere in LA has provided us with some great interviews with Stephenie Meyer about The Host. BellaandEdward.com and PagetoPremiere.com spoke to her on the red carpet. Stephenie explained basically (at least what I inferred from what she said) that she has ten years to write the two sequels to The Host before the contract allows the studio/producers to write their own. She has pieces of the other two novels. I would like to ask her how far apart in days/months/years do the other two novels take place? It complicates things when you have actors that age.
She also comments on the casting of Saoirse Ronan. She does admit that she was hesitant on casting Saoirse due to her being younger than Melanie in the book, but once she saw Hanna, she was convinced to have her audition for the role.