North Korean television says delegates are arriving in the capital Pyongyang for the ruling party's biggest meeting in decades, due to start on Tuesday.
"Amid huge attention of party members, soldiers and people across the entire country, delegates to the conference of the Workers' Party of Korea arrived here in Pyongyang on the 26th."
Analysts say ailing Kim Jong-Il’s youngest son, Kim Jong-un, will probably be given an official title at the meeting, signaling the start of the succession process.
North Korea's KCNA news agency said the conference would elect a "supreme leadership body", but gave no further details of the meeting's agenda.
Experts say 68-year-old Kim is not expected to retire just yet despite declining health, because his son is considered too young to take over.