i have heard that most of the cast is confirmed to be in the first three as they are also confirmed to be made into movies. breaking dawn doesnt have any movie rights yet so no one is confirmed to be in it but i hope they make the fourth but for eclipse most the original cast is in it and it is def going to be made. they only person who might not be is the chick who plays victoria they are supposably going to replace her but there is already a protest going on lol :)
