We don't expect you to be surprised by the contents of your Patapon 2 box, should you choose to pick it up, but let's be very clear about what's in that PSP game case.
The official PlayStation blog lays it out for potential Patapon 2 customers, displaying the contents—box, instruction manual and download voucher—and clearly warning "No disc included. Memory Stick and access to PlayStation Network required."
The UMD-free release is a "one time test case" according to the company. Frankly, I hope it's a success, but that Sony drops the excess of shipping thousands of mostly empty plastic cases.