For the next 6 weeks, Fox will showing encore episodes of Fringe (i.e. repeats) on Saturdays at 11:00PM (10:00 Central). "Saturday Night Fringe" will kick off with "Over There, Part 1".
In the regular Fringe time slot, we only have one new episode left before baseball takes over FOX (NLCS and World Series). If the NLCS ends in 4 games or less, there will be an encore of "Peter" on 10/21.
UPDATE: If the World Series wraps up in less than 7 games, we WILL have a new episode on 11/4 (titled "Amber 31422"), otherwise new Fringe episodes will resume on 11/11.