Ionic Authentication for Ionic 2?

I need to decide on an authentication service for my ionic 2 app. As far as I can tell the ionic authentication service for ionic 1 isn’t available for ionic 2. The best option I can come up with is firebase. Is there a timescale for ionic’s sevice working with ionic 2?

Ionic2 based Angular2. I see you should look for using angular2.
example Auth0(
This guide using angular2.

It is ready now , breeze now. check below