OnLeaks' render of the cheaper OnePlus 7T. [credit: OnLeaks / Pricebaba ] OnePlus has picked September 26 as the official unveiling date for its next flagship smartphone, the OnePlus 7T. The company is hosting a "unique online reveal of the OnePlus 7T in North America" at 10:30am ET with a follow-up "OnePlus 7T Series Launch Event" happening in London on October 10. OnePlus releases a new flagship smartphone about once every six months.