Heard a rumor that next wave of countries (including Scandinavia), was Oct 11. But I have to say I doubt it, looking at the supply constraints we see at the moment. I will try to find the article where I read it.
It really sucks to never be in the first wave, and specially now that we don't know anything else then "100 countries before the end of the year".
First wave orders will be delivered around early to mid-October. I think November would be accurate, depending if they divert stock intended for those other countries to UK. France, Germany to satisfy demand.