Could be legit.
Could be B.S.
Could be taking a reasonable punt.
Betting on ‘Single in December’ being correct, and if so, “information coming soon” is a certainty, so relatively good odds he/she will look clever for it. Single in early December? We’d get a definitive answer via some form of announcement, sign or (most likely) cock up in the next 10 days. Single in late December? Would still bet it’s in the setlist, and introduced as such, from the first NZ gig. That’s only two weeks away. So IF it’s true, then yes, I’d say we are well and truly within a time period where it’s ‘any moment now’. You could even, if you want, get a semi over the thought that ‘single released in December’, i.e. for sale, might even mean debuted/‘to radio’ even earlier. Or not. And I would be inclined to think that if they are doing anything in December, it will be late December. But that would still mean setlist inclusion. Anyway, we'll know all by the end of that first NZ gig. Chill.