It seems the PlayStation Store have let the beans spill on an upcoming open multiplayer Beta for Uncharted 4. The great thing? It's happening this weekend. This was all spotted by Wario64, who said this was listed on PSN, probably a little earlier than was meant to be announced.
— Wario64 (@Wario64) February 29, 2016
Some free Uncharted multiplayer for everyone? Sounds alright for me, especially as Uncharted isn't usually heralded for its multiplayer, giving everyone a chance to play with it a little before the release in April.