User-Defined Decimal Separator

Solves #1161

ReleaseNotes.md

@@ -69,6 +69,7 @@ Our community and support channels are open for any questions or assistance you
 - [New API documentation](#new-api-documentation)
 - [Selectable font size for screensaver time display](#selectable-font-size-for-screensaver-time-display)
 - [Hardware buttons bars visible on all pages](#hardware-buttons-bars-visible-on-all-pages)
+- [User-Defined Decimal Separator](#user-defined-decimal-separator)
 
 ## Details of noteworthy changes
 ### Transition to ESP-IDF as Default Framework
@@ -119,6 +120,15 @@ Bars indicating statuses of entities controlled by hardware buttons are now visi
 Color customization for these bars is also available.
 ![Image](docs/pics/ha_blueprint_hw_buttons_colors.png)
 
+### User-Defined Decimal Separator
+You can now select the decimal separator for displaying numbers on your NSPanel.
+This feature allows for consistency with your regional number format preferences, improving the clarity of numerical information.
+Simply go to the settings to choose between the dot (.) and comma (,) as your decimal separator for a display that matches your preference.
+
+![User-Defined Decimal Separator Setting](docs/pics/ha_blueprint_decimal_separator.png)
+
+This update aims to enhance the flexibility and usability of the NSPanel interface for users worldwide.
+
 ## Support
 For support or more information about this update,
 visit our [GitHub repository](https://github.com/Blackymas/NSPanel_HA_Blueprint)