Update README.md

Author: bnasslahsen

README.md

@@ -4,6 +4,11 @@
 [![Known Vulnerabilities](https://snyk.io/test/github/springdoc/springdoc-openapi.git/badge.svg)](https://snyk.io/test/github/springdoc/springdoc-openapi.git)
 [![Stack Exchange questions](https://img.shields.io/stackexchange/stackoverflow/t/springdoc)](https://stackoverflow.com/questions/tagged/springdoc?tab=Votes)
 
+IMPORTANT: ``springdoc-openapi v1.7.0 `` is the latest Open Source release supporting Spring Boot 2.x and 1.x. +
+An extended support for https://springdoc.org/v1[*springdoc-openapi v1*] project is now available for organizations that need support beyond 2023. +
+For more details, feel free to reach out: sales@springdoc.org
+
+
 `springdoc-openapi` is on [Open Collective](https://opencollective.com/springdoc).
 If you ❤️ this project consider becoming
 a [sponsor](https://github.com/sponsors/springdoc).