First draft of the 5.2 blog post.

docs/en/Blog-Posts/2022-03-08 v5_2_Preview/POST.md

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+# ABP.IO Platform 5.2 RC.1 Has Been Released
+
+Today, we are happy to release the [ABP Framework](https://abp.io/) and the [ABP Commercial](https://commercial.abp.io/) version **5.2 RC** (Release Candidate). This blog post introduces the new features and important changes in this new version.
+
+> **The planned release date for the [5.2.0 Stable](https://github.com/abpframework/abp/milestone/66) version is April 05, 2022**.
+
+Please try this version and provide feedback for a more stable ABP version 5.2! Thank you all.
+
+## Get Started with the 5.2 RC
+
+follow the steps below to try the version 5.2.0 RC today;
+
+1) **Upgrade** the ABP CLI to the version `5.2.0-rc.1` using a command line terminal:
+
+````bash
+dotnet tool update Volo.Abp.Cli -g --version 5.2.0-rc.1
+````
+
+**or install** if you haven't installed before:
+
+````bash
+dotnet tool install Volo.Abp.Cli -g --version 5.2.0-rc.1
+````
+
+2) Create a **new application** with the `--preview` option:
+
+````bash
+abp new BookStore --preview
+````
+
+See the [ABP CLI documentation](https://docs.abp.io/en/abp/latest/CLI) for all the available options.
+
+> You can also use the *Direct Download* tab on the [Get Started](https://abp.io/get-started) page by selecting the **Preview checkbox**.
+
+You can use any IDE that supports .NET 6.x, like **[Visual Studio 2022](https://visualstudio.microsoft.com/downloads/)**.
+
+## What's new with 5.2?
+
+In this section, I will introduce some major features released with this version.
+
+### Title 1
+
+TODO
+
+#### Title 2
+
+TODO
+
+## Community News
+
+TODO
+
+## Conclusion
+
+TODO