Yep, if you've been waiting for the other shoe to drop on Epic's store, here it is: https://www.unrealengine.com/en-US/blog/epic-2019-cross-platform-online-services-roadmap
Online friends, matchmaking, cloud saves, trophies, unlocks, PC overlay, and VoIP. All aiming for cross-platform, works with any engine, becoming available throughout 2019.
Game development! Discussions about game development and related fields, and/or by game developers and related professions.