Recently updated the Ubuntu 16.04 and it does update the ElasticSearch from 5.6.8 to 5.6.9.
But it has stopped working ElasticSearch as analysis-phonetic and analysis-icu is incompatible with ElasticSearch 5.6.9
java.lang.IllegalArgumentException: plugin [analysis-phonetic] is incompatible with version [5.6.9]; was designed for version [5.6.8]
java.lang.IllegalArgumentException: plugin [analysis-icu] is incompatible with version [5.6.9]; was designed for version [5.6.8]