update readme

README.md

@@ -78,8 +78,10 @@ For complete usage examples, please refer to <https://github.com/OpenCyphal-Gara
 
 ## Revisions
 
-### TODO: Add new v2
-☝ todo will be addressed as soon as the new API is stable.
+### v2.0
+
+- Updating from LibUDPard v1 to v2 involves several significant changes to improve memory management and payload handling.
+- Please follow [MIGRATION_v1.x_to_v2.0](MIGRATION_v1.x_to_v2.0.md) guide and carefully update your code.
 
 ### v1.0