Short following the announcement that Microsoft has purchased Minecraft developer Mojang, Mojang as announced that the PlayStation 4 version of Minecraft will be seeing a retail release on October 3.
The PS4 version of the game will be 36 times bigger than the worlds that were generated in the PS3 version of the game. People who have worlds already existing in the PS3 version will be able to import them to continue their experiences on the PS4.
For people who purchase the retail version of the game, there will be a day one patch which will bring the version up to speed with the digital release of the game.
Source: PS Blog EU