Added release notes for 15.2.0-rc2

Author: AndyButland

15/umbraco-forms/developer/extending/adding-a-fieldtype.md

@@ -438,7 +438,9 @@ export const manifests = [sliderValueConverterManifest];
 
 ### Language Files
 
-Setting labels and descriptions are translated via language files. The following example shows how this is created for the settings on our example field type:
+Setting labels and descriptions can be translated via language files. If no client-side localization is provided, the values provided server-side in the `Setting` attribute's `Name` and `Description` properties will be used.
+
+The following example shows how this is created for the settings on our example field type:
 
 ```javascript
 import type { UmbLocalizationDictionary } from "@umbraco-cms/backoffice/localization-api";

15/umbraco-forms/release-notes.md

@@ -18,6 +18,11 @@ If you are upgrading to a new major version, you can find information about the
 
 This section contains the release notes for Umbraco Forms 15 including all changes for this version.
 
+#### [**15.1.0-rc2**](https://github.com/umbraco/Umbraco.Forms.Issues/issues?q=is%3Aissue+is%3Aclosed+label%3Arelease%2F15.1.0) **(December 20th 2024)**
+
+* Used the name and description defined on the setting attribute for backoffice labels when no client-side localization is available [#1336](https://github.com/umbraco/Umbraco.Forms.Issues/issues/1336).
+* Resolved minor backoffice issues when creating and saving prevalue and data sources.
+
 #### [**15.1.0-rc1**](https://github.com/umbraco/Umbraco.Forms.Issues/issues?q=is%3Aissue+is%3Aclosed+label%3Arelease%2F15.1.0) **(December 17th 2024)**
 
 ##### Validation rules across form fields