I just found this article:
WhatsApp Messenger Has Beta Version Accessible to the Public on Windows Phone 8 | TruTower
Here's the app link:
WhatsApp | Windows Phone Apps+Games Store (United States)
WhatsApp Messenger Has Beta Version Accessible to the Public on Windows Phone 8 | TruTower
Here's the app link:
WhatsApp | Windows Phone Apps+Games Store (United States)