Cross platform play (the real deal) comes to Fortnite on PS4 in open beta beginning today

The PlayStation Blog published a post from John Kodera (President and Global CEO of PlayStation) detailing full cross play.

It finally happened. Fortnite on PS4 will have cross platform play with other consoles in an open beta beginning today. Read the full statement below:

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.
The first step will be an open beta beginning today for Fortnite that will allow for cross platform gameplay, progression and commerce across PlayStation 4, Android, iOS, Nintendo Switch, Xbox One, Microsoft Windows, and Mac operating systems. We see the beta as an opportunity to conduct thorough testing that ensures cross-platform play is best on PlayStation, while being mindful about the user experience from both a technical and social perspective.
For 24 years, we have strived to deliver the best gaming experience to our fans by providing a uniquely PlayStation perspective. Today, the communities around some games have evolved to the point where cross-platform experiences add significant value to players. In recognition of this, we have completed a thorough analysis of the business mechanics required to ensure that the PlayStation experience for our users remains intact today, and in the future, as we look to open up the platform.
This represents a major policy change for SIE, and we are now in the planning process across the organization 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.

Fortnite is now available on iOS, Android, PS4, Xbox One, Nintendo Switch, and PC platforms.