I.O.I will return as 9 members in October 2019 under STUDIO BLU— mes #TeamPinky (@OH_mes2) June 30, 2019
Somi and Yeonjung could not join for promotions, but will still be showing their supporthttps://t.co/7yqMpXjWtB pic.twitter.com/K3kYZz7uQr
Studio Blu is a subsidary of CJ E&M and home to Heize and Truedy. Also, seems like the first report from April turned out to be true after all.
sources: @oh_mes, @studiobluofficial