Ratchet and Clank: All 4 One is out on 18th October, but members of the EU Playstation Plus can download an exclusive open Beta to try out the 4 player co-op first. Recent releases have shown that a beta phase can be the difference between glitchy gaming and smooth sailing.
The R&C beta is available to download in Europe, but there is no news of a US release. The EU release came as a surprise so it is likely that the beta may just pop up on the PS Store in the US at any time. Co-Optimus will update you when this happens.
For now if you are a lucky EU member why not make a comment on the beta?
Is the co-op stable?
Has the camera been set up well?
How does it compare to the family friendly LEGO games?