I don't think it will mean instantaneous change, but I do expect there to be more options for shifting.
In his older age, Kim Jong-il was pretty stable in his policies which helped keep the country despotic. Now that there is a shift, there is a chance for trends to turn, at least politically.
If we look honestly at the facts, North Korean citizens weren't getting any better under the stability of Kim Jong-il. Even if they get a different dictator, at least there is a chance that they could be more open or more liberalizing. Even if they see a civil-war by the military factions, it gives the great-great grand children a much better chance at a better life than they would have otherwise, even if there is increased bloodshed in the immediate time frame.
So I am glad that there is a chance for a shift in trends because of this. Past that, we can only hope for the outcome of peace and liberty for the North Korean citizenry.