Original Source: http://www.eto.co.kr/news/view.asp?Code=20110208150536410&ts=220057

According to this article, Yuna signed with Samsung about endorsing it's another strategic smart phone product – Wave II. This article says Yuna's known to have already recorded Wave II CM for TV secretly. 

Yuna's appearing Samsung Cell Phone TV commercial is the second time since 'Yuna's Haptic' became the megahit product 2 years ago.

Woohoo~ so we'll be able to see some new Yuna videos before we get to see her Giselle.