Today we are pleased to announce bug fix releases of Elasticsearch 2.4.2 and Elasticsearch 1.7.6. This is the final release in the 1.x series. These releases are already available for deployment on Elastic Cloud, our Elasticsearch-as-a-service platform.
You can read more in the blogpost: https://www.elastic.co/blog/elasticsearch-2-4-2-and-1-7-6-released