UPN confirmed today that Star Trek: Enterprise will air for a fourth season.

The pre-quel series will however be moving away from Wednesday nights. In the fall, new episodes will begin airing at 9pm on Friday nights, with reality show America's Next Top Model taking its old Wednesday slot.

In its new timeslot, Enterprise will be competing with: Third Watch (NBC); Hope and Faith/Less Than Perfect (ABC); JAG (CBS); Reba/Grounded For Life (The WB); and The Jury (FOX).

Twenty-two episodes of the series have been ordered for the new season. Many reports indicate that viewers can expect a different feel to the series in its fourth season - for example, drawn-out season-long story arcs such as season three's Xindi plot will be replaced with shorter, two-to-three episode-long arcs.