For now this is the planned dates for release, but anything might be subject to change.
Maverick: Beta access
Eclipse: Beta access
Tsuki: April 30th, 10 AM (UTC +8)
Gang Boss: May 5th, 10 AM (UTC+8)
Thug: May 10th, 10 AM (UTC+8)
Classmate: May 13th, 10 AM (UTC+8)
Public release: May 15th, 10 AM (UTC+8)