I have to wonder this all has to do with getting North Korea to behave before next year’s election?:

President Lee Myung-bak on Tuesday replaced Unification Minister Hyun In-taek, who was singled out by politicians as responsible for strained ties with North Korea. But Cheong Wa Dae stressed that its North Korea policy remains unchanged. Yu Woo-ik, who previously served as Lee’s chief of staff and ambassador to China, will succeed Hyun.

◆ Gov’t Denies Policy Change

A senior Cheong Wa Dae official said, “We worried that the replacement could send the wrong signal” that policies toward North Korea may change. “That is why we appointed Hyun presidential special advisor on reunification affairs.”

The government feels that any change in North Korea policy must be preceded by an apology from Pyongyang for the sinking of the Navy corvette Cheonan and the shelling of Yeonpyeong Island last year. South Korea recently delivered W5 billion (US$1=W1,073) worth of disaster relief goods to North Korea and is increasing humanitarian assistance for infants and children in the North, but Seoul maintains that no fundamental improvements in inter-Korean relations can be made unless the North changes its ways.

“Even before Hyun was replaced, we already resumed humanitarian assistance for North Korea and engaged in contact behind the scenes, so communication was not entirely cut off,” said Dong Young-seung of the Samsung Economic Research Institute. “A new minister does not mean a major shift in North Korea policy.”  [Chosun Ilbo]

You can read more at the link, but I fail to see what a inter-Korean summit would achieve other than a good photo op?