Sony has just announced the official release date for Ratchet & Clank: All 4 One: October 18, 2011. You'll also get a first look at the official box art, shown above and in our gallery. If you read my preview you'd know it's a really fun four-player co-op experience.
The folks at SCEA have also announced a partnership with some of the top retailers for pre-order exclusives. Each retailer gets a different unlockable item: