Well, talk about a pleasant surprise!
The PlayStation Blog surprised everyone last night by announcing that Minecraft for the PS4 will be launching later today. Just like the Xbox One version, those who owned the game on their previous Sony system (PS3) can up upgrade for $4.99 rather than paying the full price ($19.99). Saves can also be imported to this version so all of the progress that you have made previously, and all of your wonderful creations, can be brought into the updated version of the game. Now you will have 36 times bigger worlds to create in, which should give you a wee-little-bit of room for expansion.