WhatsApp working on yet another ephemeral feature on iOS - 9to5Mac

WhatsApp working on yet another ephemeral feature on iOS  9to5MacWhatsApp Working on View-Once Text Messages for iPhone  MacRumorsWhatsApp is testing scheduled messages for chats and groups  Deccan HeraldWhatsApp to introduce long-awaited message scheduling feature  Minute MirrorWhatsApp Is Testing Read-Once Disappearing Messages  Engadget