This article is talking about KB Insurance’s new CF models, but it also mentions the status of all the CF models for KB, including SeungGi:
It is said that because Lee Seung Gi is enlisting this year, he cannot be appointed as the TV CF model. But it seems that Lee Seung Gi’s face can still be seen in print ads such as newspaper ads that utilize his portrait rights instead.
source: newspim via nate
English translation: tryp96.wordpress.com