Got mine yesterday. Underwhelming. Only works with Youtube on my iPad, and it's very slow. The setup site does claim that iOS support is coming.
I had high hopes for using it as a DLNA client, but apparently is doesn't do that either (at least not yet). Looks like it currently only works with Netflix (I really don't want to watch the worst movies of 10 years ago), Google Play or Youtube.
One other thing, there's no user auth, it lets anyone on the network control it. That's a FAIL.
Oh well, I can hold on and hope they add some functionaliy, or I could sell it for 2x what I paid on ebay...