A report by WPcentral points us to screenshots of Hindi translation requests that are visible to people who volunteer to do translations for WhatsApp. Screenshots of the translation requests show various strings that are required to be translated for Hang up, Incoming call, and Outgoing call.
Since the translating of UI elements is normally one of the last stages in app development, we can further expect the voice calling feature to come quite soon.
Earlier in March, WhatsApp for Android got updated with option to hide the 'last seen' notification, profile photo and status through privacy settings.
The feature is now available globally and can be accessed after installing the latest WhatsApp (2.11.186) update from the Google Play Store. Once the application is updated, users will find the new privacy feature in settings menu under account settings. So far, users can hide all three pieces of information from people not on their contact list, from select people, or from everyone. The feature that was already present on iOS devices. The updated also adds an option to share/save profile photo/group icon.Another interesting integration to WhatsApp for Android is the service payment feature update. It lets users pay for their friends' WhatsApp service.