The South Korean Foreign Minister has added his own optimistic comments to those made by his Vice Minister and Hill, mentioned in previous posts here. According to the BBC article here, Song Min-soon "indicated" the North Koreans may be willing to give in on the issue of nuclear technology.
It's hard to tell how concrete this "indication" but it's certainly more hopeful news than we've heard out of the 6 Party Talks in the last year, so that's something. Maybe, with the US distracted by Iraq and Iran, North Korea thinks it can get a good deal out of this? Anyway, it'll be interesting to continue watching this situation unfold.