The series currently consists of 1100 Episodes (ongoing), 5 OVAs, 13 TV specials and 15 movies. This episode list covers the original episode list for the series. Episodes 1-206 were made and broadcast in 4:3 fullscreen, while Episodes 207 onward were made and broadcast in 16:9 widescreen.
'Episodes' of One Piece are the animated TV shows based on the One Piece manga.
That happens many time.
There are currently 546 episodes, and a new episode is added every week on most anime websites.
Unless the manga ends, there's no way to know.
One piece episodes
24
So far, there have been 412 episodes aired (in Japan), but only 167 episodes have been dubbed. Which means, 167 episodes have been aired in America.
The episodes are broadcast on Sundays, so if today is Sunday, then there's a good chance a new One Piece episode was shown.
Right now dubbed is at episode 205 (ongoing) and subbed is at 516 (ongoing).
The one piece Strong World movie and the Thriller Bark arc
There is no Historical Arc.
Yes.