According to the Korean Central News Agency, Saturday's agenda for the congress in Pyongyang included revising party rules, electing Kim to the top party post and electing a new central leadership for the party.
It is expected that Kim will be given the same title his late father Kim Jong Il and grandfather Kim Il Sung held — general secretary of the Workers' Party. Currently Kim has the title of first secretary.
During his speech at the opening of the first congress of the Worker's Party in almost four decades, Kim praised the country's "success" in developing nuclear weapons despite global condemnation and tougher economic sanctions imposed against North Korea following its January nuclear test and a rocket launch of a satellite into space later in February.
According to a recent analysis, based on commercial satellite imagery of North Korea's Punggye-ri Nuclear test site from May 5, the 38 North monitoring website suggests Pyongyang may be preparing for another nuclear test very soon.
The 38 North website, maintained by the US-Korea Institute at Johns Hopkins University's Paul H. Nitze School of Advanced International Studies, analyzes various reporting on North Korea.