Some of the changes include a definite term for Dictator Kim Jong-il and a stronger emphasis on the political standing of the nation.
From the BBC article:
And it places more weight on Kim's personal doctrine of "military first".'
While it's clearly an example of North Korea showing everyone how big they are in the trousers, it's still interesting to see the slight changes to the constitution that make the government even scarier to the people living there.
Check out the story here.