Some of us are using the hosts file to block, have a look at this thread.
Works for me and makes this site in particular workable:
http://forums.windowscentral.com/edge/371442-edge-behaving-even-windows-central-heres-why.html
Does fiddling with host files also block ads in the news app?
Speaking of that app, it is most annoying on the phone, but I gather adblock won't help there.
I like the idea of edge and the drawing on webpages and then email a photo of it is nice. But with no adblock, I don't like using it. I absolutely hate ads. Crossing fingers that adblock will also be available for the phone.
It looks like AdBlock Plus is available for the Insider builds. AdBlock Plus slows down Internet Explorer, so hopefully they do a better job on Edge.