"Claire" and "Peter" are dunzo ):

Heroes' Hayden Panettiere and Milo Ventimiglia have split up.
Which I guess confirms that Panettiere is leaving the show.

I wouldn't want to be in the writer's position, I have to admit.
Killing off the female main character, who just so happens to be an ass kicking, re-gen Cheerleader?
That's gonna be a challenge!