Thanks for pointing out the "official" announcement I had missed that, perhaps someone should make it a sticky!
However, although we have had this anouncement liitle seems to have happened. I think some people in Canada have had it (?), certanly no sign of an imminent release in the UK.
The statement "WARNING: Going forward we are distributing specific upgrade packages to devices based on various criteria which makes the upgrades incompatible between some devices". Is also less than re-assuring and not clear in what this will mean to end users in practice.