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 4that 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 is -- the phone will run $649 when it hits Google Play on June 26th.
Gallery: Google I/O 2013: Samsung Galaxy S 4 running Jelly Bean | 4 Photos