WhatsApp beta picked up an update today that brings racially diverse emojis as well as the Vulcan salute to Windows Phone. Also included in version 2.12.74 is the ability to forward or delete multiple messages at once. If you notice any other changes, be sure to let us know in the comments.
The WhatsApp beta channel is full at this stage, so it is unlikely you'll be able to get in if you don't already have access to the app. That said, we'll let you know once these changes hit the public client.