WhatsApp for Windows Phone has been updated to version 2.10.529.0 which brings minor improvements and bug fixes. The WhatsApp messenger is one of the most popular cross platform messaging services available for most smartphone ecosystems.
You can download the update directly on your device through the Windows Phone Store or by using the link which follows:
WhatsApp Messenger is free for the first year of use, but requires a $0.99 per year subscription to continue using it. Considering that the result is a ad-free smooth messaging experience it probably is well worth its cost.