The requirements of Art. 404 apply to switches of all types, including snap (toggle) switches, dimmer switches, fan switches, knife switches, circuit breakers used as switches, and automatic switches, such as time clocks and timers.
The 2014 NEC heavily revised the requirement for having a neutral at switch locations. Why so much change? When a new, significant rule comes into the NEC, it often takes at least another revision cycle to work out the kinks because it’s difficult to