This is widespread speculation that Kim Jong-Il, the dictator of North Korea, has suffered a stroke. If true, who knows what could happen. His family has spent the last 60 years building a cult of personality and eliminating any possible rivals. It also seems pretty clear that his sons have little chance of successfully taking over like on the death of their father he did.
All bets are off. North Korea could unify with the south, go democratic and remain independent, or be taken over by a military junta aligned with Putin.
The Chinese are probably going to want some say in North Korea's future. This could blow up in the new president's face.