Add note to example project page

Author: hach-que

docs/example_project.mdx

@@ -6,6 +6,12 @@ description: Download the example projects to learn how to use the EOS Online Fr
 
 ## Available example projects
 
+:::warning
+This documentation covers our example project for Unreal Engine 5.5 and EOS Online Subsystem.
+
+A new example project will be available for Unreal Engine 5.6 when EOS Online Framework releases at the end of June 2025. You will no longer need the Online API Explorer plugin in the upcoming example project.
+:::
+
 We offer multiple example projects, so you can use the right example for your project:
 
 - [Blueprints Example for Unreal Engine](https://src.redpoint.games/redpointgames/examples/-/tree/main/OSB_RedpointEOS) (requires Online Subsystem Blueprints)