One of the most popular messenger apps in the world is WhatsApp, and that is no different for Windows Phone. The private WhatsApp beta program is where new features are introduced for testing before being pushed to the mainline. As such, it is fun to see where development is heading.
An earlier report on Twitter today noted that WhatsApp beta can now save songs to the phone itself. This ability would be a significant step up from where the beta was previously. Prior to the update, users could play the file but not access it through other means.