Extended Fortnite cross-play beta launches on PlayStation 4
Following a comprehensive evaluation process, SIE has identified a path toward supporting cross-platform features for select third party content. We recognize that PS4 players have been eagerly awaiting an update, and we appreciate the community’s continued patience as we have navigated through this issue to find a solution.
[...]This represents a major policy change for SIE, and we are now in the planning process across the organisation to support this change. We will update the community once we have more details to share, including more specifics regarding the beta timeframe, and what this means for other titles going forward.