Windows 10: Announcing .NET Core 3.1 Preview 1

Brink · Oct 15, 2019

Today, we’re announcing .NET Core 3.1 Preview 1. .NET Core 3.1 will be a small release focused on key improvements in Blazor and Windows desktop, the two big additions in .NET Core 3.0. It will be a long term support (LTS) release with an expected final ship date of December 2019.

You can download .NET Core 3.1 Preview 1 on Windows, macOS, and Linux.

.NET Core 3.0 SDK and Runtime

Docker images

ASP.NET Core and EF Core are also releasing updates today.

Visual Studio 16.4 Preview 2 and is also releasing today. It is a recommended update to use .NET Core 3.1 Preview 1. Visual Studio 16.4 includes .NET Core 3.1, so just updating Visual Studio will give you both releases.
Details:

.NET Core 3.1 release notes

Known Issue: The Visual Studio 16.4 installer may uninstall the .NET Core 3.0 Runtime when it installs .NET Core 3.1. We recommend you re-in-install or repair the .NET Core 3.0 SDK in that case.

Improvements

There are several targeted improvements planned for .NET Core 3.1. The following improvements are not available yet, but are expected in later previews.

In .NET Core 3.0, the .NET Core Desktop Runtime Installer (includes WPF and Windows Forms) does not install the .NET Core Runtime (includes CoreFX and CoreCLR) for you. We will be changing that, so that the Desktop Runtime installer is self-sufficient. The Runtime and Hosting Bundle, for server scenarios, already works this way.

C++/CLI was a promised component of the .NET Core 3.0 release. It was delivered, given that it is a required dependency of WPF, but a developer experience in Visual Studio and the SDK was missing. We will be delivering that experience with .NET Core 3.1 and Visual Studio 16.4. C++/CLI is only supported on Windows.

macOS 10.15 Catalina includes a new security requirement, that applications must be notarized. We will be satisfying these requirements for the .NET Core SDK, for .NET Core 3.1 and all other supported .NET Core releases. If you are using .NET Core to deliver macOS applications, we would appreciate working with you on notarization requirements.

Closing

The primary goal of .NET Core 3.1 is to polish the features and scenarios we delivered in .NET Core 3.0. .NET Core 3.1 will be a long term support (LTS) release, supported for at least 3 years.

Please install and test .NET Core 3.1 Preview 1 and give us feedback. It is not yet supported or recommended for use in production.

If you missed it, check out the .NET Core 3.0 announcement from last month.

Richard Lander
Program Manager, .NET Team
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Source: https://devblogs.microsoft.com/dotne...3-1-preview-1/

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Brink · Oct 15, 2019

Announcing .NET Core 3 Preview 2

.NET Core 3.0 Preview 2 is now available and it includes a bunch of new updates to ASP.NET Core.

Here's the list of what's new in this preview:

Razor Components

SignalR client-to-server streaming

Pipes on HttpContext

Generic host in templates

Endpoint routing updates

Get started

To get started with ASP.NET Core in .NET Core 3.0 Preview 2 install the .NET Core 3.0 Preview 2 SDK

If you're on Windows using Visual Studio, you'll also want to install the latest preview of Visual Studio 2019.

Upgrade an existing project

To upgrade an existing an ASP.NET Core app to .NET Core 3.0 Preview 2, follow the migrations steps in the ASP.NET Core docs.

Add package for Json.NET

As part of the work to tidy up the ASP.NET Core shared framework, Json.NET is being removed from the shared framework and now needs to be added as a package.

To add back Json.NET support to an ASP.NET Core 3.0 project:

Add a package reference to Microsoft.AspNetCore.Mvc.NewtonsoftJson

Update your ConfigureServices method to include a call to AddNewtonsoftJson().

services.AddMvc()
.AddNewtonsoftJson();

Runtime compilation removed

As a consequence of cleaning up the ASP.NET Core shared framework to not depend on Roslyn, support for runtime compilation of pages and views has also been removed in this preview release. Instead compilation of pages and views is performed at build time. In a future preview update we will provide a NuGet packages for optionally enabling runtime compilation support in an app.

Other breaking changes and announcements

For a full list of other breaking changes and announcements for this release please see the ASP.NET Core Announcements repo...
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Read more:

Announcing .NET Core 3 Preview 2 | .NET Blog

ASP.NET Core updates in .NET Core 3.0 Preview 2 | ASP.NET Blog

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Brink · Oct 15, 2019

Announcing .NET Core 3 Preview 2

.NET Core 3.0 Preview 2 is now available and it includes a bunch of new updates to ASP.NET Core.

Here's the list of what's new in this preview:

Razor Components

SignalR client-to-server streaming

Pipes on HttpContext

Generic host in templates

Endpoint routing updates

Get started

To get started with ASP.NET Core in .NET Core 3.0 Preview 2 install the .NET Core 3.0 Preview 2 SDK

If you're on Windows using Visual Studio, you'll also want to install the latest preview of Visual Studio 2019.

Upgrade an existing project

To upgrade an existing an ASP.NET Core app to .NET Core 3.0 Preview 2, follow the migrations steps in the ASP.NET Core docs.

Add package for Json.NET

As part of the work to tidy up the ASP.NET Core shared framework, Json.NET is being removed from the shared framework and now needs to be added as a package.

To add back Json.NET support to an ASP.NET Core 3.0 project:

Add a package reference to Microsoft.AspNetCore.Mvc.NewtonsoftJson

Update your ConfigureServices method to include a call to AddNewtonsoftJson().

services.AddMvc()
.AddNewtonsoftJson();

Runtime compilation removed

As a consequence of cleaning up the ASP.NET Core shared framework to not depend on Roslyn, support for runtime compilation of pages and views has also been removed in this preview release. Instead compilation of pages and views is performed at build time. In a future preview update we will provide a NuGet packages for optionally enabling runtime compilation support in an app.

Other breaking changes and announcements

For a full list of other breaking changes and announcements for this release please see the ASP.NET Core Announcements repo...
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Read more:

Announcing .NET Core 3 Preview 2 | .NET Blog

ASP.NET Core updates in .NET Core 3.0 Preview 2 | ASP.NET Blog

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Brink · Oct 15, 2019

Announcing .NET Core 2.2 Preview 3

Today, we are announcing .NET Core 2.2 Preview 3. We have made more improvements to the overall release that we would love to get your feedback on, either in the comments or at dotnet/core #2004.

ASP.NET Core 2.2 Preview 3 and Entity Framework 2.2 Preview 3 were also released today.

You can see more details of the release in the .NET Core 2.2 Preview 3 release notes. Related instructions, known issues, and workarounds are included in the releases notes. Please report any issues you find in the comments or at dotnet/core #2004.

Please see the .NET Core 2.2 Preview 2 post to learn more about the new features coming with .NET Core 2.2.
Thanks for everyone that contributed to .NET Core 2.2. You’ve helped make .NET Core a better product!

Download .NET Core 2.2

You can download and get started with .NET Core 2.2, on Windows, macOS, and Linux:

.NET Core 2.2 Preview 3 SDK (includes the runtime)

.NET Core 2.2 Preview 3 Runtime

Docker images are available at microsoft/dotnet for .NET Core and ASP.NET Core.

.NET Core 2.2 Preview 3 can be used with Visual Studio 15.9 Preview 3 (or later), Visual Studio for Mac and Visual Studio Code.

Platform Support

.NET Core 2.2 is supported on the following operating systems:

Windows Client: 7, 8.1, 10 (1607+)

Windows Server: 2008 R2 SP1+

macOS: 10.12+

RHEL: 6+

Fedora: 27+

Ubuntu: 14.04+

Debian: 8+

SLES: 12+

openSUSE: 42.3+

Alpine: 3.7+

Chip support follows:

x64 on Windows, macOS, and Linux

x86 on Windows

ARM32 on Linux (Ubuntu 18.04+, Debian 9+)

Closing

Please download and test .NET Core 2.2 Preview 3. We’re looking for feedback on the release with the intent of shipping the final version later this year.
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Source: Announcing .NET Core 2.2 Preview 3 | .NET Blog

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Windows 10: Announcing .NET Core 3.1 Preview 1

Announcing .NET Core 3.1 Preview 1

Announcing .NET Core 3.1 Preview 1

Announcing .NET Core 3.1 Preview 1

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