[Killswitch]

Yes, classes are stable in V8 4.5 so Node.js 4.0 will have classes without runtime flags.

[k__]

Is there a list with all the supported ES2015 features?

[egeozcan]

Probably the same as io.js[0].

[0]: https://iojs.org/en/es6.html

[k__]

Why are these lists always missing import/export/modules?

[mkozlows]

Because Node uses CommonJS modules.