Initially released as part of the Windows 10 Creators Update a month ago, the .NET Framework 4.7 is now Generally Available.
The .NET Framework 4.7 includes new features such as support for C# 7 and VB 15, performance and reliability improvements, and enhanced cryptography support.
For details on how to install, visit the Microsoft .NET Blog: Announcing the .NET Framework 4.7 General Availability.
Source: Microsoft .NET Blog