Chill Out.
All you have to do is ignore the dubs, and for some reason, I am not convinced. This anime is too big to be premiered like this with such little notification about it, If it was legit it seems like it would be all over the place, Maybe its just a fan dub or something.
I don't know but I am not convinced, and if it is true, Then that means we will soon get a K-on! dvd for me to buy and all I will have to do to ignore they possble chance of a bad dub is change the language