Earlier this week, the PlayStation 4 version of the popular building-sim, Minecraft, finally got the Bedrock Update. That update made its way around all other versions of the game so that all of them could play together; the PS4 version of the game was the one notable exception. With that update, everybody can play Minecraft on all platforms where it's available and have their progress carry over.
There is a long history here for why Sony was the last hold out with this, but all that needs to be said is that it doesn't matter now and you can go play Minecraft with your friends regardless of their preferred platform; just as you and so many others have been asking for so long. This update also comes on the heels of the new version of "Minecraft Realms," now called "Minecraft Realms Plus." The "Realms" subscription service allowed you to create your own private server for you and your friends for a monthly fee. That (both the private server and the monthly fee) is still a part of "Realms Plus," but now you also get stuff from the Minecraft Marketplace for free, which I suppose is a better deal than before. Additional details can be found over on the official site.
Minecraft with the Bedrock Update is available on (takes deep breath) Android, iPhone, iPad, Amazon FireTV, PlayStation 4, PC, Mac, Linux, Nintendo Switch, and Xbox One.