Service availability is limited to the United States of America and Canada.
Don't forget about that line as well that can see bottom of this site, next to the copyright related stuff... Even if they did eventually officially release it in Europe, at least personally have no intention of playing on that version/server. Since I tend to just like playing on NA/American servers, more English speakers etc.
Though they should look at how say FFXIV does their servers, aka everyone is on the same client and can play on any regions server want(if aren't already planning on doing that*). "regions server" being just in a list with all the other regions, makes more sense than actually forcing each region into their own client/bubble...
That kind of treatment should be left to regions where they don't have any choice in the matter, as in due to that regions drastically different laws etc. Though guess copyright might be something to think about as well, say if they actually have got a lot of past collab content stuff sorted out for this "NA release". Guess will see in time. >.>
*Though they haven't really said anything, so who knows what they have in mind for potential other regions - "official access" to the game.