Hi all ! Friend of mine have a brother who knows a person working at blizzard ( or something like that , I don't remember exacly ). He put some kind of "leaked" version of official account upgrade registery page
A moment ago I've downloaded the client update from link sent to your email and it works propertly.
WARNING : DON'T WRITE ANYTHING IN KEY TEXTBOX
+ I don't know why if your write any chars to accname and password it says GRATZ too but guy sad he didn't have time to finish this.