Current information is scarce. It will receive a Japanese dub, but it is unknown if it will receive an English dub. Even Cassandra Lee Morris, voice of Morgana, doesn't know, but posits if there is enough demand, it may happen.
The anime will presumably follow the video game closely. It will be about a rebellious group of teenagers in Tokyo who form the Phantom Thieves of Hearts to rebel against the corruption and slavery in society. It is unknown if the protagonist will be named Akira Kurusu as he was in the manga.