Installing Ember CLI’s npm install now gives:
npm WARN deprecated 6to5-core@3.6.5: 6to5 is now 'babel': https://babeljs.io/blog/2015/02/15/not-born-to-die
But everything works fine!
The ember-cli repository on GitHub already has a change listed for the 0.2.0-beta.1 release.
That being said, I don’t know how much longer we’ll see Babel (6to5); I think @rwjblue is moving in favor of Esperanto, which I believe will trim down ES3 transforms as well as some of the wonky ES6 module importing that has had to be worked around in the past. I also believe it’s faster too!