Imdb: There’s 2 more episodes Free and The Old Ball and Chain. 

Digital Spy: Sky1 has secured the world premiere of two special Prison Break episodes billed as a movie. The channel will air the two-hour series finale on Tuesday, May 19, during which a major character is said to be killed off. The final scenes will flash forward four years into the future, revealing which character meets their maker. The following week, Sky1 will air the exclusive world premiere of another two-hour special, Prison Break: The Final Break, which will fill in the gap between the present day and the four-year flash forward. The series finale of Prison Break airs on Sky1 on Tuesday, May 19 at 10pm. Prison Break: The Final Break can be seen on Sky1 on Wednesday, May 27 at 10pm.

Amazon (review): This is a straight to DVD movie of what happened between the 4 years they skipped over on the series finale. It will show Sarah and Michael’s wedding, what happened to Gretchen and so forth. This will wrap up any questions and/or loose ends they left us with at the finale. (Prison Break: The Final Break (2009) released on July 21, 2009 : 88 minutes. Prison Break: Season 4 released on June 2, 2009 : 976 minutes = 22 x ~40 + 88?)

SarahWayneCallies.org, from Free / The Old Ball and Chain episodes:

About Michael’s dead:

Facebook (wall post): The date of death shown on his tombstone is November 4, 2005, meaning that, within the series time line, he survived less than nine months after setting his plan into motion (the date in which he committed his original bank robbery is shown to be March 9, 2005 during the first season episode “The Old Head“).