It should changed by "32U4-based boards or something like this.

Moreover...what about Zero or Due? The example piece...

 while (!Serial) {
     ; // wait for serial port to connect. Needed for Leonardo only
   }

...is needed for them too or not?? (in other words, they do auto-reset when Serial monitor is opened?). It isn't clear anywhere of documentation and maybe this page should be the right place to point it out.