It was announced in January 2009 on the Consumer Electronics Show and was integrated in Skype for the first time in version 4.0 beta 3 from January 7, 2009, with the final version being released on February 3.
Стабильная версия SILK была впервые представлена в версии Skype 4.0 Beta 3 для Windows, вышедшей 7 января 2009 года.