If we have som free guessing here now, will it ever come a jailbreak for all of us that have
accindentally upgrade to latest firmware?
yes it will only be tether, maybe the future 6.1.4 or 5.2.2 will have a untether jailbreak according to evasi0n they have the new exploit for the next apple release 6.1.4.
read this link evasi0n is working on the ios 7 which is 6.1.4