The feature is currently in beta is being developed for iOS users, as of now and they will be able to speed up their voice notes. The feature will be released with WhatsApp version 184.108.40.206.
The feature will have a total of three-speed levels – 1x, 1.5x and 2x. So, depending on one’s preference.
A user will be able to play the audio messages at any one of these speeds. This is great for times when a user receives an audio message from a friend or a person who usually talks slowly and wants to speed it up.