NK attention seeking posturing. Groundhog Day.
Nothing will happen.
I think hard-line military brass are getting impatient. It remains to be seen if their can restrain their urge to lash out. It is true that they have become more belligerent than in the past. Deteriorating situations both inside and outside the country raises the anxiety of the regime, which leads to more belligerent faction in control of decision-making, a kind of damn-the-torpedoes types.