This is a better list of changes from prior stable releases, rather than just the prior beta:<a href="https:&#x2F;&#x2F;www.elastic.co&#x2F;guide&#x2F;en&#x2F;elasticsearch&#x2F;reference&#x2F;2.0&#x2F;breaking-changes.html" rel="nofollow">https:&#x2F;&#x2F;www.elastic.co&#x2F;guide&#x2F;en&#x2F;elasticsearch&#x2F;reference&#x2F;2.0&#x2F;...</a><p>Read through the series of pages to understand all major changes.