Saturday night (24th), SBS Evening News, quoting a Japanese source, reported that Kim Jong-chol, second son of NK leader, Kim Jong-il, has been named to the same deputy director post within the Organization and Guidance Department (OGD) which his father held when he was made heir to his father, Kim Il-sung.

The short segment reported Kim Jong-chol now appears to in the best position of any of Kim Jong-il's children to take over for him given the importance of the younger Kim's new post.

Also -

Gist translation of a 24 NOV 07 Korean article on Kim Jong-chol from the Maeil Kyongjae news website -

"김정철, 후계자로 발탁 가능성"
"Kim Jong-chol, may have been picked as successor"


북한 김정일 국방위원장의 차남인 김정철이 북한의 최고 요직 가운데 하나인 조선노동당 조직지도부 부부장에 발탁된 것으로 알려졌다고 일본 마이니치 신문이 보도했습니다.
Japan's Mainichi newspaper reported that Kim Jong-il's second son, Kim Jong,chol has been selected as the deputy director of the Organization and Guidance Department, one of the top jobs in the NK.
이 신문은 복수의 소식통을 인용해, 김정철이 김정일 위원장과 같은 중앙당 본청사에 있는 집무실에서 근무하고 있어 수시로 김 위원장의 지시를 받고 있다며 이같이 전했습니다.
The paper also reported that Kim Jong-chol is working in his father's office at Korean Worker's Party Headquarters, putting him in a position to receive instructions on a regular basis from Kim Jong-il.
마이니치 신문은 김정일 위원장이 1969년 조직지도부 부부장에 발탁됐을 때가 현재의 정철씨와 같은 나이 때였으며, 김 위원장이 70세가 되는 5년 후에는 공식 후계자를 발표할 가능성이 있다고 전망했습니다.
According to Mainichi, Kim Jong-il was the same age as Kim Jong-chol is now when the older Kim was selected to fill the same OGD post back in 1969, which presents the possibility that when Kim Jong-il turns 70 in 5 years he could name his son as his successor. /End Article/

Similar reporting has appeared before but this time the reporting appears to be getting a bit more traction - Kim Jong-chol's position has been greatly enhanced if the above reporting is true.