Orange Caramel has announced a surprise comeback! On April 1st, the girls are scheduled to release their next digital single, "Bangkok City."  Pledis Entertainment's official Twitter released a concept photo of the trio's 'funky girl' transformations and a message that read, "Orange Caramel!  The first Asian project! Bangkok City!!" A representative of Pledis spoke through OSEN and elaborated, "This surprise digital single, 'Bangkok City,' is targeted towards the fans all across Asia, as a form of repayment for the love they've shown the girls." Unlike the fairy tale inspired images they've shown fans before, the girls took on a more mature and fantasy-like look to fit their funky concept.  Whether or not they will be promoting on music programs has yet to be decided. Source + Photos: OSEN via Naver