As of October 14, 2007, One Piece has had a total of 326 TV episodes. Episodes from 207 onwards have been broadcast in high-definition at 720p resolution, in addition to standard definition.
It was stated that a filler arc named "Ice Hunter" will start on October 14th of 2007 and will last up to 2008. Eichiro Oda will be helping Toei with the production of these fillers. The airing of filler arcs is to allow the author a chance to publish more material.
Though most anime series air a new episode every week, recently One Piece airs an average of four episodes a month or, in some cases, will air several episodes back-to-back and then go off the air for a few weeks.
In the fall of 2006, Toei Animation produced a series of five recap episodes, retelling the back stories of each of the Straw Hat crew members using clips from old episodes, tied into the current storyline by framing the recaps as flashbacks each of the characters were having just before storming the Tower of Justice. The recaps also marked a change in the series' time slot, and they may have been done to help familiarize new viewers with the cast of characters
Up coming movie:
Episode of the Island of Perpetual Winter (2008) - A retelling of the Drum Island Arc. It could possibly be a connection the Ice Hunter arc that they are currently airing.
The movie is a retelling of the Drum Island arc with new music and animation. It is speculated that Vivi has been removed from the plot while both Nico Robin and Franky, who joined the crew after the Drum Island arc, have been added. The movie also has the Straw Hat's new ship, the Thousand Sunny. It has been hinted that Oz from the Thriller Bark Arc will be in the movie.