I'm glad Seoul officials decided to dump the "HiSeoul" slogan*.
Born in October 2002, HiSeoul was underlined with the "Soul of Asia" motto four years later. According to the Chosun Ilbo, the official slogan will be either that one or the less delicate "Soul Seoul".
Bonus : the city will be knicknamed "City of Haechi" as a tribute to the fabled lion which gave its brand and logo to Haitai, the famous confectionery company.
On Haitai's logo, the lion looks OK, but the original model has a funny look and a stupid smile. I understand the cultural / nationalist motivation and I do like this character, but many may wonder why the World's center for knowledge society wants to be represented by a strange animal apparently plagued with the IQ of a fencepost.
The daily newspaper presented Haechi (해치)'s new official portrait : a bubble caricature, probably the fruit of a bad LSD trip by a sci-fi cartoon artist. The two statues planned for Gwanghwamun Plaza will probably look more like the ones which laid there a couple of decades ago.
Still, I'm dubious. They just took away the old "bank trees"** in the middle of Sejongno, and I know the new plaza will have no tree - fountains do look nice in the summer but they won't protect you from the blazing sun when you cross this large stretch and they won't be working during the long winters.
* Strangely enough, the death warrant was issued right before the HiSeoul festival - http://english.chosun.com/w21data/html/news/200805/200805020021.html
** 은행나무 - I prefer the korean name to the Japanese artifact (gingko biloba)
addendum 20080608 : following Hwa Young J's comment, I added the new Haechi logo.