A recent teaser for the upcoming Lenovo Z6 smartphone suggested that it would have Sony AI cameras, a high-capacity battery and a "next-generation" processor. Subsequently, the OEM's vice president got on his Weibo and released more concrete details on the new device. It seems this phone will indeed be getting the Snapdragon 730 SoC.
https://www.notebookcheck.net/Lenovo-VP-confirms-Snapdragon-730-for-the-Z6.425621.0.html