I found a poster of Ice Age: Continental Drift while searching around on DeviantArt, the the person who uploaded, BiggestIceAgeFanEver, says that it's the real poster, and that's why he uploaded it.
Here's the poster:
It features Peaches on it as a teenager, and I am the one that predicted she would be a teenager, that's the only time I predicted something and it actually happened.
Here's some more information about the film.
Carlos Saldanha and Michael Thurmier are returning as the directors, Lori Forte is returning as the producer, Chris Wedge is officially expected to reprise his role as Scrat, Seann William Scott and Josh Peck are expected to reprise their roles as Crash and Eddie. Since Peaches is a teenager, I might also be right about Jennette McCurdy being her voice, but we'll just have to wait and see. Go to
Ice Age: Continental Drift at Ice Age Wiki for more information and the references.