Viber for Windows Phone just got updated to v4.5.2 in Windows Phone Store. This update includes just bug fixes. Previous major update included couple of new features like the ability to swipe between photos in chat and language settings.
What’s new in previous update v4.5:
• Easily view all photos in a chat by swiping
• Change Viber language in settings
More than 500 million Viber users text, call, and send photo and video messages worldwide over Wifi or 3G – for free. Viber Out can be used to make calls to non-Viber mobile and landline numbers at low rates.
Download it here from Windows Phone Store for free.