This library has gained popularity amongst developers who want to switch over the JS solutions. Interestingly enough, this framework has also been popular due to its connection with the Handelebars.js templating engine.
Anyone who uses Ember.js should note that this upgrade is not critical and does not patch any major security holes. Everything is about moving forward towards newer technologies & improving Ember.js as a whole.
You can view the Ember Data v2 changelog on GitHUb to see what’s been updated.
Also the team has released news about reworking v2.0 for a v2.1 beta. This is certainly not stable and should not be attached to your current webapps – however early adopters might play around with the beta to report bugs, annoying features, or perhaps even suggest features to improve Ember’s performance on single-page web applications.