> To ensure the effectiveness of browser-level controls like DNT, regulatory intervention is necessary. Government bodies, such as the European Union, can mandate the inclusion of DNT options in all browsers operating within their jurisdiction.

> Furthermore, websites already obligated to inform users about tracking cookies should be compelled to respect the DNT signal sent by users’ browsers.

So, the idea is to bring back Do-Not-Track header? I am pretty sure if this will ever happen, some browsers will set this header by default (just like last time with IE10). Advertisers would be pretty unhappy, and since they apparently have some power over EU, I don't think enforcement of the header is politically likely.