Yonhap is reporting that South Korea's Deputy Foreign Minister Chun Young-woo and his North Korean counterpart Kim Kye-gwan held a meeting that lasted nearly two hours today. http://english.yna.co.kr/Engnews/20070123/630000000020070123202729E5.html)
Regarding a date, Chun is quoted in the piece as noting:
1) "So the date will be decided in the next few days."
2) "The date has yet to be set, but I believe the next round of the six-party talks would resume in the week starting on the fifth (of February) at the latest."