Square Enix has announced that a NieR: Automata anime adaptation is in production, no other details were revealed but Square Enix has released a teaser trailer for the project. Whilst no other details were revealed Aniplex has tweeted about the project hinting that it could be involved with the production.
Synopsis via Square Enix:
NieR:Automata tells the story of androids 2B, 9S and A2 and their battle to reclaim the machine-driven dystopia overrun by powerful machines.
Humanity has been driven from the Earth by mechanical beings from another world. In a final effort to take back the planet, the human resistance sends a force of android soldiers to destroy the invaders. Now, a war between machines and androids rages on… A war that could soon unveil a long-forgotten truth of the world.