This AP story says that the current session of the National Assembly runs until January 8, that the police were not sent in to the Assembly hall on Wednesday, and that negotiations between the GNP and protesting legislators began again Wednesday evening: Tensions high at sit-in:
On Tuesday, assembly speaker Kim Hyong-o, a former member of the ruling party, threatened to send guards into the chambers to haul the legislators out.
On Wednesday evening, rival party leaders agreed to resume negotiations on a compromise in the new year, averting a New Year's Eve blowup.