As discussed previously, we plan to upgrade Apiman's ES support to 5.x. 1.3.3.Final is the final (planned) release to support ES 1.x. We don't anticipate doing another 1.3.x release unless serious regressions are found. Is ES 2.x support important to folk? We didn't upgrade previously because ES 2.x didn't support bulk delete queries - however, they added that back latterly with a plugin. Any other requests or feedback welcome. Regards, Marc