宣布.NET Core 3.1预览版1
.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 3.1预览版1 。 .NET Core 3.1将是一个小版本，着重于Blazor和Windows桌面的主要改进，这是
.NET Core 3.0. It will be a long term support (LTS) release with an expected final ship date of December 2019.
.NET Core 3.0中的两个重要改进。 这将是一个长期支持(LTS)版本，预计最终发布日期为2019年12月。
You can
您可以在Windows，macOS和Linux上 download .NET Core 3.1 Preview 1 on Windows, macOS, and Linux. 下载.NET Core 3.1 Preview 1 。 ASP.NET Core and EF Core are also releasing updates today. ASP.NET Core和EF Core今天也发布更新。 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. Visual Studio 16.4 Preview 2也将在今天发布。 建议您使用.NET Core 3.1预览版进行更新。VisualStudio 16.4包括.NET Core 3.1，因此只需更新Visual Studio即可获得这两个版本。
Details:
细节：
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
已知问题：Visual Studio 16.4安装程序在安装.NET Core 3.1时可能会卸载.NET Core 3.0运行时。 在这种情况下，建议您重新安装或修复 .NET Core 3.0 SDK in that case. .NET Core 3.0 SDK 。
There are several targeted improvements planned for .NET Core 3.1. The following improvements are not available yet, but are expected in later previews.
.NET Core 3.1计划了一些有针对性的改进。 以下改进尚不可用，但预期在以后的预览中有所改进。
In .NET Core 3.0, the
在.NET Core 3.0中， .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. .NET Core桌面运行时安装程序 (包括WPF和Windows窗体)不会为您安装.NET Core运行时(包括CoreFX和CoreCLR)。 我们将对此进行更改，以使Desktop Runtime安装程序能够自给。 对于服务器方案，运行时和主机捆绑包已经可以通过这种方式工作。
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.
C ++ / CLI是.NET Core 3.0版本的承诺组件。 鉴于它是WPF的必需依赖项，因此已交付了该产品，但是缺少Visual Studio和SDK的开发人员经验。 我们将通过.NET Core 3.1和Visual Studio 16.4提供这种体验。 仅Windows支持C ++ / CLI。
macOS 10.15 Catalina includes a new security requirement, that applications must be
macOS 10.15 Catalina包括一项新的安全要求，即必须对应用程序进行 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. 公证 。 我们将满足.NET Core SDK，.NET Core 3.1和所有其他受支持的.NET Core版本的这些要求。 如果您使用.NET Core交付macOS应用程序，我们将与您合作处理公证要求。
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
.NET Core 3.1的主要目标是完善我们在.NET Core 3.0中提供的功能和方案。 .NET Core 3.1将提供 long term support (LTS) release, supported for at least 3 years. 长期支持(LTS)版本，至少支持3年。
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.
请安装并测试.NET Core 3.1 Preview 1并给我们反馈。 目前尚不支持或建议将其用于生产中。
If you missed it, check out the
如果错过了，请查看上个月的 .NET Core 3.0 announcement from last month. .NET Core 3.0公告 。
You can
您可以在Windows，macOS和Linux上 download .NET Core 3.1 Preview 1 on Windows, macOS, and Linux. 下载.NET Core 3.1 Preview 1 。 ASP.NET Core and EF Core are also releasing updates today. ASP.NET Core和EF Core今天也发布更新。 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. Visual Studio 16.4 Preview 2也将在今天发布。 建议您使用.NET Core 3.1预览版进行更新。VisualStudio 16.4包括.NET Core 3.1，因此只需更新Visual Studio即可获得这两个版本。
Details:
细节：
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
已知问题：Visual Studio 16.4安装程序在安装.NET Core 3.1时可能会卸载.NET Core 3.0运行时。 在这种情况下，建议您重新安装或修复 .NET Core 3.0 SDK in that case. .NET Core 3.0 SDK 。
改进之处 (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.
.NET Core 3.1计划了一些有针对性的改进。 以下改进尚不可用，但预期在以后的预览中有所改进。
In .NET Core 3.0, the
在.NET Core 3.0中， .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. .NET Core桌面运行时安装程序 (包括WPF和Windows窗体)不会为您安装.NET Core运行时(包括CoreFX和CoreCLR)。 我们将对此进行更改，以使Desktop Runtime安装程序能够自给。 对于服务器方案，运行时和主机捆绑包已经可以通过这种方式工作。
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.
C ++ / CLI是.NET Core 3.0版本的承诺组件。 鉴于它是WPF的必需依赖项，因此已交付了该产品，但是缺少Visual Studio和SDK的开发人员经验。 我们将通过.NET Core 3.1和Visual Studio 16.4提供这种体验。 仅Windows支持C ++ / CLI。
macOS 10.15 Catalina includes a new security requirement, that applications must be
macOS 10.15 Catalina包括一项新的安全要求，即必须对应用程序进行 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. 公证 。 我们将满足.NET Core SDK，.NET Core 3.1和所有其他受支持的.NET Core版本的这些要求。 如果您使用.NET Core交付macOS应用程序，我们将与您合作处理公证要求。
闭幕 (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
.NET Core 3.1的主要目标是完善我们在.NET Core 3.0中提供的功能和方案。 .NET Core 3.1将提供 long term support (LTS) release, supported for at least 3 years. 长期支持(LTS)版本，至少支持3年。
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.
请安装并测试.NET Core 3.1 Preview 1并给我们反馈。 目前尚不支持或建议将其用于生产中。
If you missed it, check out the
如果错过了，请查看上个月的 .NET Core 3.0 announcement from last month. .NET Core 3.0公告 。