Visual Studio 2019 预览版和 Visual Studio 2019 RC 有什么区别？
What's the difference between Visual Studio 2019 Preview and Visual Studio 2019 RC?
2018 年 12 月 4 日发布了 Visual Studio 2019 预览版 1。 2019 年 2 月 27 日，他们发布了预览版 4，同时发布了 Visual Studio 2019 RC。
我假设在发布 RC 时他们停止了预览分支，但现在它们是成对发布的（预览 4.1 和 RC.1，预览 4.1.Svc1 和 RC.1 Svc1）。 Preview 的发行说明现在重定向到 RC（即“Visual Studio 2019 Preview 4.1 是对 Preview 4 的服务更新，包含与 Visual Studio 2019 RC.1 版本相同的功能").
维护两个版本的目的是什么？在预览发行说明中，我只发现了以下内容："Visual Studio 2019 Preview now contains the same functionality as the Visual Studio 2019 RC release. However, the Preview does not provide go-live rights"。什么是 "go-live rights"？发布预览版的不同原因是什么？
链接：
RC and Preview 4 are the same, just different Release channels。
With this release, we’re introducing two product “channels”: the
release channel and the preview channel. Starting today, Visual Studio
2019 RC is available in the release channel
(visualstudio.com/downloads) and Visual Studio 2019 Preview 4 is
available in the preview channel (visualstudio.com/preview). Both
versions can be installed and used side-by-side and, right now, both
channels contain the same bits.
Starting April 2, the release channel (RC) build can be upgraded to
our generally available (GA) release, which will be ready for
production use. The preview channel will continue to offer an early
look at upcoming features, just as you’ve become accustomed to in
Visual Studio 2017.
VS2019发布后，预览频道获取2019 Update 1预览1，类似于VS2017：
所以在 2019 最终版出来之前，预览和 RC 是一样的。
2018 年 12 月 4 日发布了 Visual Studio 2019 预览版 1。 2019 年 2 月 27 日，他们发布了预览版 4，同时发布了 Visual Studio 2019 RC。 我假设在发布 RC 时他们停止了预览分支，但现在它们是成对发布的（预览 4.1 和 RC.1，预览 4.1.Svc1 和 RC.1 Svc1）。 Preview 的发行说明现在重定向到 RC（即“Visual Studio 2019 Preview 4.1 是对 Preview 4 的服务更新，包含与 Visual Studio 2019 RC.1 版本相同的功能").
维护两个版本的目的是什么？在预览发行说明中，我只发现了以下内容："Visual Studio 2019 Preview now contains the same functionality as the Visual Studio 2019 RC release. However, the Preview does not provide go-live rights"。什么是 "go-live rights"？发布预览版的不同原因是什么？
链接：
RC and Preview 4 are the same, just different Release channels。
With this release, we’re introducing two product “channels”: the release channel and the preview channel. Starting today, Visual Studio 2019 RC is available in the release channel (visualstudio.com/downloads) and Visual Studio 2019 Preview 4 is available in the preview channel (visualstudio.com/preview). Both versions can be installed and used side-by-side and, right now, both channels contain the same bits.
Starting April 2, the release channel (RC) build can be upgraded to our generally available (GA) release, which will be ready for production use. The preview channel will continue to offer an early look at upcoming features, just as you’ve become accustomed to in Visual Studio 2017.
VS2019发布后，预览频道获取2019 Update 1预览1，类似于VS2017：
所以在 2019 最终版出来之前，预览和 RC 是一样的。