Sulli has officially left f(x) to focus on her acting career.
According to multiple entertainment sources on June 25, Sulli stopped all activities as an f(x) member and is preparing her solo activities as an actress.
Sulli is reported to have officially left the group, but will be remaining under contract with SM Entertainment since her contract with the agency has not yet expired.
f(x) is expected to be reorganized as a 4 member group with Krystal, Victoria, Luna, and Amber. Their comeback is expected to be around September.