So far, there are only 39 dubbed episodes and 63 subbed episodes. But I do believe that new episodes come out weekly. Saturday nights 2:00 a.m. on [Adult Swim], ( Cartoon Network at night )
There are 51 episodes and one movie.
51 and a movie: The Conqueror of Shamballa in the first anime. In Fullmetal Alchemist: Brotherhood (an new adaptation that follows the original manga) there are...
Only one, that is because full metal alchemist brotherhood is the alternative season to full metal alchemist. Even though they are different number of episodes, and different plots.