The platform will now allow users to mute notifications from people who don't follow you as well as people who you don't follow. Folks can also mute the new accounts who are most likely to abuse others. However, the firm has not given any statement regarding how long someone has to use a Twitter account before the account is not considered as a new one.
Furthermore, the latest update also gives users the option to stop getting notifications from the accounts who don't have a profile picture, confirmed email and confirmed phone number.
These settings can be accessed by going into Notifications > Settings > Advanced Filters option of Twitter.
This is a good step taken by Twitter as getting abusive content and notifications can really become a headache for many people and the ability to mute such content will save one from great annoyance.