Complex sentence: A promo version of the track was leaked to the Internet on July 11,2007, and the full single was released on February 15,2008 in three versions, CD, DVD and 12 inch.
Split into simpler sentences: A promo version of the track was leaked to the Internet on 11 July 2007. The full single was released on 15 February 2008 in three versions, CD, DVD and 12 inch.