https://techcrunch.com/2019/10/01/whatsapp-self-destructing-beta/

WhatsApp users may soon get the ability to have their messages self-destruct after a set period of time. That’s according to a highly-reliable tipster who spotted the feature combing through the code of a beta version of the app.

Twitter user WABetaInfo said on Tuesday that the recently released public beta of WhatsApp for Android — dubbed v2.19.275 — includes an optional feature that would allow users to set their messages to self-destruct.