WhatsApp

WhatsApp now allows you to delete messages up to 2 days after sending them
WhatsApp might allow users to see Status updates straight from a chat list like Instagram
WhatsApp group calls get banner notifications, selective muting and more
WhatsApp group admins to soon have more control over new members
WhatsApp may soon let you edit messages even after sending them 
Exiting WhatsApp groups might become less awkward
WhatsApp is testing new “filter feature”
WhatsApp rolls out emoji reactions for messages
WhatsApp is testing a new feature called Communities to organise, for workplaces & schools
WhatsApp to roll out a new ETA feature to improve document sharing experience for beta users