American micro-blogging and social media networking service Twitter is rolling out a new feature called ‘Labs’ for Twitter Blue, its premium subscription service.

Labs will give Twitter blue subscribers early access to features that Twitter is testing as a part of that bundle, which is currently available in Canada and Australia.

Twitter says features that are released via Labs may eventually roll out to the rest of Twitter, become a static feature of Twitter Blue or be scrapped altogether based on feedback it hears from subscribers, ANI reported from Washington.

“Labs also provides an opportunity for other internal product teams to submit features, get early quantitative and qualitative data, and then later release to a wider audience. What’s featured in Labs will change as we develop new features,” the company said in a statement.

In Canada and Australia, a Twitter Blue subscription currently costs $3.49 or $4.49, respectively.

The subscription gives Twitter users access to premium features, including tools to organize bookmarks and an ‘Undo Tweet’ feature, which seems to be the closest thing Twitter will offer about the long-requested ‘edit’ button.

Twitter Blue also comes with a reader mode feature soon.