http://www.dualshockers.com/2014/05/07/dont-starve-gets-a-multiplayer-expansion-with-dont-starve-together/
A multiplayer expansion is on the way for Don't Starve! Four players on-screen minimum. No word on a PS4 version yet. Free to anyone who purchased the game. After an alpha phase the price of Don't Starve will go up to $20. Coming some time this Summer.