This is in today's Daily Variety
*Note: Article is very long so I'm only including the part about Prison Break*
Fox High-Fives Stability
by Denise Martin and Michael Learmonth
...."On Mondays in fall, 'Prison Break' will stay planted at 8 p.m., followed by 'Vanished,' about the disappearance of a senator's wife. In January, '24' will take over from 'Prison Break' and air Mondays at 9.
To help appease fans, Liguori noted that this season, the story arcs in 'Prison Break' would be designed specifically around the anticipated hiatus."