dev and tech preview admonitions added

Author: Mariya Pershina

docs/release-notes/master.adoc

@@ -23,8 +23,6 @@ include::topics/making-open-source-more-inclusive.adoc[]
 
 include::topics/ref_new-features-7-3-0.adoc[leveloffset=+2]
 
-include::topics/ref_technology-preview-features-7-3-0.adoc[leveloffset=+2]
-
 include::topics/ref_fixed-issues-7-3-0.adoc[leveloffset=+2]
 
 include::topics/ref_known-issues-7-3-0.adoc[leveloffset=+2]

docs/topics/ref_new-features-7-3-0.adoc

@@ -16,12 +16,33 @@ Starting with {ProductShortName} {ProductVersion}, you can run the `discover` an
 * The `discover` command generates the discover manifest that preserves the platform and runtime configurations defined in the Cloud Foundry (CF) application manifest.
 * The `generate` command uses the discover manifest to generate the deployment manifest in a Kubernetes-native format to prepare it for {ocp-full} deployments. You can also use the command to generate non-Kubernetes manifests such as a Dockerfile.
 
+:FeatureName: Asset generation
+include::snippets/developer-preview-admonition.adoc[]
+
 (link:https://issues.redhat.com/browse/MTA-4610[MTA-4610])
 
 .{ProductShortName} now uses Red Hat Build of Keycloak for user authentication
 
 {ProductShortName} {ProductVersion} now uses `{rhbk-first}` instance for user authentication and authorization. The {ProductShortName} Operator manages the `{rhbk-short}` instance and configures a dedicated realm with necessary roles and permissions. For `{rhbk-short}`, the secret and the pod name has changed. The pod name for {rhbk-short} is changed to `rhbk-operator`. (link:https://issues.redhat.com/browse/MTA-4540[MTA-4540])
 
-.Listing all languages in an application is now supported
+.Listing all languages in an application is now available
+
+In {ProductShortName} {ProductVersion}, you can list all languages in an application by using the `--list-languages` flag in the {CLIName}. The listed language that has no supported providers requires a custom rule set and the --`override-provider-settings` flag when you analyze the application.
+
+:FeatureName: Listing all languages in an application
+include::snippets/developer-preview-admonition.adoc[]
+
+(link:https://issues.redhat.com/browse/MTA-4798[MTA-4798])
+
+
+.Support for Python and Node.js language providers is now available
+
+In addition to the Java and Go language providers, support for the Python and Node.js language providers is now available for the application analysis in {ProductShortName} 7.3.0. As a result, you can now perform the following actions for these providers in the {ProductShortName} user-interface (UI):
+
+* Add custom migration targets. 
+* Run custom rules. 
+
+:FeatureName: Support for Python and Node.js language providers
+include::snippets/technology-preview-admonition.adoc[]
 
-In {ProductShortName} {ProductVersion}, you can list all languages in an application by using the `--list-languages` flag in the {CLIName}. The listed language that has no supported providers requires a custom rule set and the --`override-provider-settings` flag when you analyze the application. (link:https://issues.redhat.com/browse/MTA-4798[MTA-4798])
+(link:https://issues.redhat.com/browse/MTA-4542[MTA-4542])