Google just dropped a pretty big surprise during its opening day I/O keynote. It's taken the wraps off a new edition of Samsung's Galaxy S 4 that runs stock Android Jelly Bean. The device itself is fully unlocked and packing LTE support for AT&T and T-Mobile, along with 16GB of storage and what Google promises will be prompt system updates. Not surprisingly, this won't quite be the budget-friendly off-contract option that the Nexus 4
