https://www.polygon.com/2018/8/12/17680834/elder-scrolls-legends-cross-platform-crossplay-ps4

Bethesda Softworks’ top spokesman made a remarkably candid comment to Game Informer yesterday: Platforms that don’t allow cross-console play may be cut out of The Elder Scrolls: Legends’ launch later this year. Though Pete Hines did not specifically name PlayStation, Sony or the PlayStation 4, there’s no other console presenting any obstruction to cross-platform play.

At QuakeCon 2018, Hines, to Game Informer, said Bethesda’s expectations “are essentially non-negotiable.” The Elder Scrolls: Legends is currently on (and cross-compatible with) Windows PC, Mac, iOS and Android. Hines said Bethesda is still discussing the matter with its platform partners, which basically means Sony.