Beta Channel is live, collections is in Canary, all the details right here.

I am a little disappointed with the Microsoft Edge Beta. When downloading files it does not integrate with my Internet Download Manager. If I am downloading a large file I cannot close the browser until it is finished which maybe a couple of hours. The Favourites folder is now on the Favourites Bar (which I don't like). I would prefer the original favourites menu to be in the top right corner as it was previously. The Favourites Bar is loaded with sites I do not use and in the past I could hide it. Oh, also the favourites menu looks too much like Fire Fox or Google Chrome.