The 30% quote is legit:
" I believe that in about fifty years' time it will be possible, to programme computers, with a storage capacity of about 109, to make them play the imitation game so well that an average interrogator will not have more than 70 per cent chance of making the right identification after five minutes of questioning."
This was a prediction Turing made, not how the test was defined.
The chatterbot "Eugene Goostman" has apparently passed the Turing test:
As I kind of predicted, the program passed the Turing test, but does not seem to have any trace of general intelligence. Is this a kind of weak p-zombie?
EDIT: The fact it was a publicity stunt, the fact that the judges were pretty terrible, does not change the fact that Turing's criteria were met. We now know that these criteria were insufficient, but that's because machines like this were able to meet them.