The news so far from North Korea ... earthquakes and nuclear tests:
North Korean 'earthquake' appears to be due to a nuclear test
More on that Nth. Korean its not an earthquake it a nuclear test
The latest is to expect a 'special announcement' at 12.30pm local time (thats 0330GMT)
I'm guessing its nothing to do with this, 'cause its been announced already:

But, who knows? Maybe he is announcing his appearance on the DPRK Biggest Loser?