The change has now been made available to everyone.
Twitter has made a major change to the way its reply function works.
From Tuesday (11 August) on, users will be able to select who can reply to their tweets, in an attempt to give tweeters control over who can participate in conversations that they begin.
When posting a tweet, users will be able to choose who can reply based on three options: everyone, people you follow and only people you mention.
If you opt for either of the latter options, the reply function will be greyed out for all who don’t fit the description, making the tweet impossible to reply to.
They can view, like and retweet the post, but they won’t be able to reply directly to the poster.
As well as this, the thread itself will also acknowledge that replies are limited.
According to Twitter itself, the goal of the change is "to make conversation on Twitter more like conversation in real life", where you can choose exactly who it is that you communicate with.
Here's an example of how it works, with Twitter making it so Oscar The Grouch is the only account able to reply to its tweet.
https://twitter.com/OscarTheGrouch/status/1293263413200728064?s=20
You're not wrong, Oscar.
