Today, we are happy to announce the release of Elasticsearch 2.0.0-beta2, based on Lucene 5.2.1. This is the last planned beta release before the 2.0.0 release candidate.
IMPORTANT: This is a beta release and is intended for testing purposes only. Elasticsearch 2.0.0-beta2 is not compatible with 2.0.0-beta1, and there is no guarantee that Elasticsearch 2.0.0-beta2 will be compatible with Elasticsearch 2.0.0 GA.
DO NOT DEPLOY IN PRODUCTION
You can read the blog post about Elasticsearch 2.0.0-beta2 here.