Some of the costumes are platform-specific, but a good number of them have been confirmed in the West on the News application on Nintendo Switch.
☆ NintendObs Weekly – Monday, February 26, 2018 – Sunday, March 4, 2018.
Eren & Levi:
Christa & Ymir:
Conny and Sacha:
Mikasa & Armin:
Annie & Jean:
…Wanna play? Buy a Switch.
And if you’ve already got yours, click on Attack on Titan 2 for everything you need to know about the game. 😀