The WhatsApp team has been hard at work for all versions of the app. Now they have pushed a new update to their app on Windows Phone 7.8 and 8.1 bumping it to version 2.16.65.
The update seems to be a minor one up from the previous version 2.16.64 bringing in fixes for some mobile users who could not open the application after the previous update (2.16.64).
The update is now live in the store for users with Windows Phone 7.8 and 8.1. Grab it and let us know what do you think about the update in the comments below.