Platinum Games continues the Drakengard series with the upcoming NieR: Automata. NieR: Automata is set after the fourth ending of the original NieR and focuses on a war between humanity and a machine army from another world.
While NieR: Automata takes place in the same world as the original NieR, there is no direct narrative connection between the games. So even if you've never played NieR or any of the Drakengards you can jump right in without worrying about being lost.
If you're hankering for some Android on Android action role-playing action, you don't have long to wait. NieR: Automata comes to PlayStation 4 on March 7, 2017, and to PC on Steam at some point in 2017.