Whatsapp is making the dream change. No one will see whether you are online or not
WhatsApp is working to provide what we have needed for a long time: the ability to hide the "online" status.
Users will have the opportunity to hide their status and not be forced to respond to someone or others to see when they are online and when not.
According to the information that WABetaInfo provides so far, the new "online" status feature will give you the ability to allow people you want to see your status and block from this option those you don't want to see your status in real time. The same as with "last seen", i.e. the last time you entered the application.
All these changes are being made for the sake of preserving and protecting privacy. No one has to answer if they don't want to.