This was probably a trial balloon by JBL. Stoke the fires, let it simmer, then release again before Thanksgiving. They might even consider an update or redesign if it truly sold out faster than expected.
IMO, there's a market for small, affordable true horn-loaded tweeters/compression drivers. Klipsch and HSU are the only other ones I can think of that currently do this. A Klipsch 500M vs JBL 530 vs HSU HB1 shootout would be fascinating to me.
Someone please do this!
Speakers: M040 | X18 | UB5
Sub: VTF-2 mk5
Amps: HK 3490 | TSR-7810