The story for Witcher 3: Songs of the Past was actually written "years ago", according to Fool's Theory CEO

Article Preview
Witcher 3 fans, prepare to dive into "Songs of the Past" knowing its story is a long-lost treasure. The CEO of Fool's Theory just dropped a bomb, revealing that the narrative for this expansion, arriving 11 years after the base game, was actually crafted years ago. This tidbit gives a fascinating glimpse into the long development journey for Geralt's unexpected new adventure.
Opens Eurogamer.net in a new tab. SikGamingHQ points you to the story — we don’t clone it.