Does anyone know when theyll dub the new Full Metal Alchemist: Brotherhood season?

also, when i first heard about a new FMA like a year ago, i read it was supposed to be a story about the grand kids of the elric brothers having their own alchemist adventure, but i watched the first subbed episode and its just like an alternate version of the first FMA where they have the same characters and the same journey to find the philosophers stone, the only difference is that they meet under different cirstances and do their journey runs a different route.