South Korea and K-pop's Big Four unveil FANOMENON, an 11-day Seoul festival for December 2027

South Korea's government and HYBE, SM, YG and JYP — the four largest K-pop companies — have unveiled FANOMENON, an 11-day festival across Seoul Arena and KINTEX from 2–12 December 2027. The Korea Culture and Tourism Institute projects 520,000 visitors and roughly USD 680 million in economic impact. A four-company equal-stake joint venture, under Fair Trade Commission review, will run it.