We can't say that we're shocked, but Fox has announced via a press release that they have canelled Prison Break at the end of the his season. The final episodes begin airing April 17th and Fox president Kevin Reilly has announced "our remaining batch of four episodes and then there are a couple more we're contemplating."
So why did they cancel the show? Well Reilly said, "The show has just played out. You get to a point creatively where you feel all the stories have been told, and you want to end strong and not gimp out in the end of the season."