Build 2019: Microsoft Announces .NET 5

Posted on May 6, 2019 by Paul Thurrott in Dev with 15 Comments

Microsoft announced that the next .NET release after .NET Core 3 will be branded as .NET 5, with the firm finally combining classic .NET with the open source .NET Core into a single platform.

“There will be just one .NET going forward, and you will be able to use it to target Windows, Linux, macOS, iOS, Android, tvOS, watchOS, and WebAssembly, and more,” Microsoft’s Richard Lander announced. “We will introduce new .NET APIs, runtime capabilities and language features as part of .NET 5.”

As you may know, .NET Core is essentially the open source and cross-platform version of Microsoft’s proprietary .NET platform, which is often referred to as the .NET Framework. The issue for .NET Core, to date, has been that it offered only a subset of .NET Framework functionality on Windows. This made it impossible for some developers to migrate existing code bases to the new platform.

So, Microsoft has evolved. NET Core since its initial release in 2016, adding over 50,000 NET Framework APIs to the platform. With .NET Core 3, the firm added most .NET Framework 4.8 functionality and enabled support for Windows Forms, WPF, and Entity Framework 6.

Now, the next release, now called .NET 5, will be a single platform that can replace both .NET Core 3 and .NET Framework 4.8. It will ship in November 2020, with the first preview available in the first half of 2020, Microsoft says. And it will be supported with future updates to Visual Studio 2019, Visual Studio for Mac, and Visual Studio Code.

Microsoft says that the goal for .NET 5 is to produce a single .NET runtime and framework that can be used everywhere and that has uniform runtime behaviors and developer experiences, to expand the capabilities of .NET by combining the best features from .NET Core, .NET Framework, Xamarin and Mono, and to build that product out of a single code-base that can work on and expand together. It will continue to be open-source, of course.

More specifically, .NET will support Java and will eventually support both Objective-C and Swift too. Pretty amazing.

Tagged with ,

Elevate the Conversation!

Join Thurrott Premium to enjoy our Premium comments.

Premium member comments on news posts will feature an elevated status that increases their visibility. This tab would allow you to participate in Premium comments with other premium members. Register to join the other Premium members in elevating the conversation!

Register or Subscribe

Join the discussion!


Don't have a login but want to join the conversation? Become a Thurrott Premium or Basic User to participate