Barring the big announcement of a Nier Replicant remaster for PS4, Xbox One, and PC, Square Enix also announced a brand new Nier project at the 10th anniversary Nier celebration stream. Nier Reincarnation is a new Nier game for iOS and Android. Nier Reincarnation has been developed by Applibot with character designs by Cydesignation (a part of Cygames). Watch the teaser trailer for Nier Reincarnation below:
As of now, a localisation has not been announced. With Square Enix mobile, games it is best to wait until the Japanese release is out before hoping for a localisation. Nier Reincarnation might be confirmed sooner given how successful Nier Automata is in the West. Check out the official Japanese website for Nier Reincarnation here.
Nier Reincarnation is in development for iOS and Android.