An exclusive report by OSEN recently stated that Chen, Baekhyun, and Xiumin will be forming a unit scheduled to debut at the end of October. It's also reported that the 3 members plan on participating in a music video filming this week.
Shortly after, SM Entertainment confirmed the report and announced that Chen, Baekhyun, and Xiumin will indeed form EXO's first unit; however, the specifics on their unit name, debut date, and more currently remain undecided.
Meanwhile, even before the reports, fans have had speculations about the 3 in a unit after a special video called 'Reservoir Idols' was recently revealed during EXO's solo concert.
Stay tuned for updates!