Season 4 has not been officially announced by FOX, but the cast and crew of Prison Break seem very sure that it will be picked up in the later Spring of 2008. Dominic Purcell guarantees it. In addition, During a visit to Israel, to launch the ‘Yes’ HD channel, on March 11, 2008, Wentworth Miller confirmed that there will be a fourth season, and that filming begins in late March. He also said that the new season will air in September, shortly after the Olympics.
