The death of server-side rendering has been greatly exaggerated. Ember.js developer Tom Dale:
Say what you will about server-rendered apps, the performance of your server is much more predictable, and more easily upgraded, than the many, many different device configurations of your users. Server-rendering is important to ensure that users who are not on the latest-and-greatest can see your content immediately when they click a link.
Interesting things brewing in the Ember.js space.