I downloaded the 'Java EE' and 'web developer' editions of Eclipse Neon to try out the new ES6 support that allegedly exists in this new version of the software.
However both editions appear to contain only the old ES3 validator - with no ES6 in sight.
I could find no mention of ES6/ECMAScript 2015 support in the Eclipse help documents.
I tried searching the Eclipse forums for some clues, but all I found were these two unanswered posts pondering the same question - just where is ES6 support hiding in Eclipse Neon?