Release-Checklist.md

 ## Before Release
 
 - Review [milestones](https://github.com/openapitools/openapi-generator/milestones) to ensure there are no outstanding issues/PRs that need to be urgently addressed before the release.
+- File a PR to remove the SNAPSHOT version
+- File a PR to update the OpenAPI Generator Online's Dockerfile to use the stable version 
+- Disable bin/ensure-up-to-date.sh in shippable for the time being.
 
 ## Release
 
@@ -10,6 +13,7 @@
 ## After Release
 
 - update versions to next SNAPSHOT version  (e.g. [#4894](https://github.com/swagger-api/swagger-codegen/pull/4894))
+- re-enable bin/ensure-up-to-date and update the Petstore samples accordingly
 - update README (e.g. [167b2f5](https://github.com/openapitools/openapi-generator/commit/167b2f59b811ba6780976a6e6764c1edf75a30f7), [1029b69](https://github.com/openapitools/openapi-generator/commit/1029b692e5fcfc2600433a85613ba42e2646826d))
 - update OpenAPI Generator Maven Plugin README (modules/openapi-generator-maven-plugin/README.md) (e.g. [9c79297]( https://github.com/openapitools/openapi-generator/commit/9c79297d6a073790a90b6efedd32e8bebd177828))
 - update Homebrew formula to use the latest version, e.g. https://github.com/Homebrew/homebrew-core/pull/15675