It seems that the visual novel Chaos;Child will be heading to PS Vita and PS4 in the west as listings have appeared at Amazon Germany.
Both the PS Vita and PS4 version are available for pre-order under the publisher PQube which has localized the visual novels Steins;Gate and Steins;Gate 0.
The current release date is set for June 30, 2017 but this could just be a place holder. As soon as we get an official announcement, we will let you know.
Chaos;Child was released for Xbox One in Japan in 2014, following releases on PS Vita, PS3, and PS4 in 2015, PC in 2016, and iOS in 2017.