Viber announced last week that a special version of their client with full VOIP voice calling will be coming to Nokia Lumia handsets.

The app is now in Marketplace and features:

Making and receiving VoIP calls HD

Send free messages Viber contacts

Create group chats

Set a profile photo

Notable improvements in the application interface

Nokia Lumia owners can find Version 2.2 in the Windows Phone store here.

Via MimovilWindows.com