Reporting from Mashable's website, Saturday (02/09/2019) these features were discovered by social media consultant Matt Navarra, who said that he could access features that had not been released by digging around in the code of the Twitter iOS application.
A Twitter spokesman declined to comment on the specifics, but said the company regularly experimented with many new features, and that not all tests were launched more widely. Following are the features found by Matt Navarra:
1. Night Mode Improvement
Twitter is testing two major updates for night mode or dark mode. First the dark mode is really black, not dark blue as it is now.
In addition to improving colors, it seems that Twitter is testing an automatic version of the feature, which will function similar to Night Shift on iOS. With dark automatic mode, eating dark Twitter themes can be automatically done at night and dies in the morning until noon.
