The most interesting part about this will be how GAA transistors perform. This is the first new transistor architecture since FinFET. It promises better perform

The most interesting part about this will be how GAA transistors perform. This is the first new transistor architecture since FinFET. It promises better performance on metrics such as leakage, drive currents, switching speeds, etc., and not just density (although they're all interrelated to some degree -- e.g., you could improve leakage by reducing density or switching speed).