Reading the many responses on this thread does give the impression that no ETAs are available, in fact I posted on it on the page before this, 2 other people on this one. Pretty please peeps read at least the current page of the thread before asking the same questions.
Putting it more bluntly
Stop asking when your area will get 50Mbit no-one who will talk knows! 
It'll be announced a couple of days before as it has been per this thread. Keep eyes peeled.