The first trailer has been released at the recent Nintendo Direct for Attack on Titan: Humanity in Chains, the most recent Attack on Titan game for the 3DS. This new teaser trailer gives us a brief look into the new gameplay and graphics of the 3DS title. The game itself was earlier revealed to be coming to the west after the Australian Classification Board rated an Attack on Titan game for the 3DS as MA15+. The game is developed by Spike Chunsoft who published the game in Japan as Shingeki no Kyojin ~Jinrui Saigo no Tsubasa CHAIN, and were looking for a publisher for western audiences. Atlus will be publishing the game internationally.
Attack on Titan: Humanity in Chains will be releasing in European and North American regions this May on the 3DS.
Here are some screenshots of the game: