You get beta access to the multiplayer. August 19th for the PS4. I think Engadget said the beta was only for five days or something. Not worth a pre order to only get to play the beta for five days. Let me play the beta till it comes out, and I might pre order it.
Besides I already own Destiny, it’s fun enough, not really, but who cares. Might be fun if you play the co op with somebody, unfortunately I don’t know anyone with a PS4.