Changes include being able to limit notifications only to people you follow on Twitter (if opted in; otherwise, the experience remains unchanged) and a quality filter, now open to all users. This option can also be turned on to improve the quality of tweets, focusing on account age and user behavior.
— Twitter Support (@Support) August 18, 2016
This is one step in the direction of an attempt to address pressing concerns that Twitter acts as a platform for free speech at the expense of extreme harassment and damaging statements. Still, while filtering out content may work, it doesn’t eliminate the harassment. Here’s hoping Twitter will address that issue, too.