Spotted a new video recently after I also couldn't get any input from any regional dahon entity about availability back when it launched.
Reached out to dahon again full of hope, but nope, all pretty vague and uncertain:
GB-2 currently is not in sale and we'are working on putting it to market ASAP. The estimated time should be the second half of the next year
It may come to the Europe market, if not, other road bikes from DAHON may be considered. Plans are still undecided, so please stay tuned!
Too bad. Already thinking of one could get a hold of one in Asia and import it to Europe, though haven't found a true trustworthy, reliable source - which would have to ship overseas as well on top of that...