I think it will be a new character. An older man. But what we need to ask ourselves is Will he be good or bad? I say bad, we already have ONE hero (harry) so a bad guy would be better. hehe. And I dont think voldermort will have such a big part in this book. he is prolly gaining power, and the last book he will be big and scary and powerful! BAM.. but Harry will get him.. i hope..hehe