There are rumours floating around today, initially from Weibo – China’s answer to Twitter, that Kim Jong-un is dead. Other rumours floating about are that he’s not dead but in hiding in China following a coup attempt. One of the reasonings behind this rumour are reports of a large number of cars outside North Korea’s Embassy in Beijing.
U.S. Officials meanwhile believe the rumours to be a hoax.
Of course, all this is impossible to verify one way or the other at this point in time, and whilst most likely is completely unfounded and untrue, there is a chance that Kim Jong-un is in fact dead.
Time will tell.

Seems Kim Jong-un is not dead. Just threw one hell of a party http://gawker.com/5884176/how-a-birthday-party-at-the-north-korean-embassy-started-the-kim-jong+un-death-rumor.