On September 29, Choi Daniel's label told news outlets, "Choi Daniel was discharged today. His initial discharge date was October 1, but due to the extended Chuseok holiday, his discharge was moved up 2 days and he was able to return today."
Choi Daniel enlisted back in October of 2015. He served as a public service worker at a hospital in Seoul due to a leg injury preventing him from being active in the military.
Welcome back, Choi Daniel!