https://wccftech.com/snapdragon-865-tested-in-reference-design-since-june-2018/

According to earlier reports, Qualcomm began the mass production of its Snapdragon 855 back in June which coincided with TSMC’s announcement regarding the mass production of its 7nm FinFET node. The upcoming Snapdragon 855 Fusion Platform will also feature the X50 modem, giving smartphones of the future access to 5G connectivity.

Samsung and Lenovo are already planning smartphones with the Snapdragon 855 SoC, with the latter reportedly being the first to announce that flagship. However, while we wait for the impending arrival of the Snapdragon 855, an individual states that Qualcomm has already been testing out the Snapdragon 865, which if we’re going according to model numbers go, will succeed the Snapdragon 855 when it launches.