WhatsApp Tests Read-Triggered Disappearing Messages

WhatsApp is getting a new setting for disappearing messages that causes them to vanish based on a countdown that starts only after they've been read. Spotted by WaBetaInfo in the latest WhatsApp TestFlight beta, the new option starts a countdown after the recipient reads the message, rather than starting the countdown when the message is sent. The countdown options with the "After reading" setting chosen include the usual "5 minutes," "1 hour," and "12 hours." The setting appears in the "Default