SM released additional news about the upcoming mini-album Twinkle by SNSD’s new sub-unit TaeTiSeo (Tae-yeon, Tiffany, Seo-hyun). Before the physical release of the album on May 2nd, the album will be released worldwide on iTunes on April 29th (on Sunday). The title track will be a “funky soul medium-tempo dance music with an arrangement reminiscent of Stevie Wonder style music from the 70s and 80s in harmony with modern feel”. I have no idea how to paraphrase that , but it sounds interestingly vague .
They also released the album cover(?). The concept in that picture is a bit different/toned down from the earlier teaser photos.
Update: a Tae-yeon teaser video and another picture were released: