A new leak suggests that Qualcomm is planning to ditch the age-old efficiency plus performance core configuration on its upcoming Snapdragon 8cx successor codenamed the SC8280. It will instead use 'Gold' and 'Gold+' cores for better performance, at the expense of battery life.
https://www.notebookcheck.net/Snapdragon-8cx-Gen-2-successor-codenamed-Qualcomm-SC8280-could-debut-Gold-cores-for-better-single-and-multi-threaded-performance.527074.0.html