Samsung has released the fourth preview of Visual Studio Tools for Tizen. Tizen is a Linux-based open source OS running on over 50 million Samsung devices including TVs, wearables, and mobile phones. Since announcing its collaboration with Microsoft on .NET Core and Xamarin.Forms projects last November, Samsung has steadily released preview versions of.NET support for Tizen with enriched features, such as supporting TV application development and various Visual Studio tools for Tizen.