Added Selecting DBMS on Template Creation section

docs/en/Blog-Posts/2021-01-14 v4_2_Preview/POST.md

@@ -120,9 +120,17 @@ Currently, **MongoDB** provider implements these methods as a single bulk operat
 
 ### Selecting DBMS on Template Creation
 
-And DbMigrator creates the initial migration if no migration exists.
+[ABP CLI](https://docs.abp.io/en/abp/4.2/CLI#new) now has an option to specify the DBMS when you use EF Core as the database provider.
 
-**TODO**
+**Example: Select MySQL as the DBMS**
+
+````bash
+abp new BookStore -dbms mysql --preview
+````
+
+Available options: `SqlServer` (default), `MySQL`, `SQLite`, `Oracle-Devart`, `PostgreSQL`. See the [documentation](https://docs.abp.io/en/abp/latest/Entity-Framework-Core-Other-DBMS) to use any other DBMS or switch the DBMS later.
+
+> If you select a DBMS other than the SQL Server, then the database migrations are also created when you first run the `DbMigrator` application.
 
 ### Swagger Login
 
@@ -188,7 +196,7 @@ Easy CRM is an example application built with the ABP Commercial. MVC (Razor Pag
 
 ### Other News
 
-* Implemented Iyzico as a payment gateway for the payment module in addition to Paypal, Stripe, 2Checkout and Payu.
+* Implemented Iyzico as a payment gateway provider for the [payment module](https://commercial.abp.io/modules/Volo.Payment) in addition to Paypal, Stripe, 2Checkout and Payu providers.
 
 ## ABP Community News
 
@@ -202,6 +210,10 @@ We planned ABP Community to publish English-only contents. However, we see that
 
 **When you submit a non-English content, it is not visible to all the visitors by default**. Visitors can see a non-English content only if their browser language or the selected language matches to the content language (there is a language selection at the end of the website).
 
+### External Contents
+
+If you want to publish your content anywhere else, but want to post a link of your content, you can select *External Content* option while submitting the post. For example, [this article](https://community.abp.io/articles/aspnet-boilerplate-to-abp-framework-xml-to-json-localization-conversion-0mxyjrzj) is an external article and also written in Chinese language.
+
 ## About the Next Release
 
 The next feature version will be 4.3.0. It is planned to release the 4.3 RC (Release Candidate) on March 11 and the final version on March 25, 2021.