Way back in December 2016, whistle-blower Edward Snowden asked Twitter to come up with secret or self-destructing DMs. At that time, Twitter CEO Jack Dorsey just said it's "reasonable and something we'll think about."
reasonable and something we'll think about— jack (@jack) December 14, 2016
Well, it turns out the company has taken the suggestion seriously, as a new Secret conversation feature has been spotted in the Twitter for Android application package.
Twitter is working on End-to-End Encrypted Secret DM! pic.twitter.com/2lLr5i1p42— Jane Manchun Wong (@wongmjane) May 4, 2018
The screenshot shared reveals an option to educate you about encrypted conversations, a 'Secret' tag when the mode is on, as well as ability to view encryption keys.
Sadly, there's currently no information on when Twitter plans to roll out the feature.