It was reported by the folks at WPCentral that WhatsApp Beta comes with several speed improvements, which boosts the overall performance of the app.
The latest update also gives users the ability to do the following;
? Ability to view the number of participants in a specific group
? Some UI changes for the picture preview window
? Ability to add captions to the images you share.
These features are what we have for now as the complete features are not yet available in the stable version. Hopefuly the complete features should be out soon so we request your frequent presence on this blog so as to keep you updated