Echo JS 0.11.0

Yes. ES6/ES7 are great but they are not ready yet. I am looking into ways to make jsblocks more ES6/7 friendly. Regarding the server-side rendering I believe it is very powerful feature. We use client-side framework to improve user experience and server-side rendering does improve user experience because there is no flickering before the framework kicks in. And if you cache the pages you will also get extra performance boost.