The English language dubbed version of the show will air on August 15th with the Japanese language version airing on August 17th. Additional information can be found in the ANN article. From the article:
The anime will be an original work, with adapted themes and events from the main Rick and Morty animated series.
Tower of God was such a flat show to me. Probably because of the source material, but I can’t get a feel for the director from it.