I was just talking about the B&W Nautilus concept speaker and this reminds me a little of that. The exponential rear chamber on the tweeter, and bi-amplified design with external crossover and perhaps EQ. Looks like a great deal of differences has happened from when I toured the factory some 5-8 years ago. The tweeter and mid drivers look like completely new and not Seas / Scanspeak sourced. Or at least, not based on existing motors I know of.
The listening room they are in is also interesting. I’ve never heard a Magico that wasn’t designed for a lot of space or a lot of room control. These seem to follow along those lines, and at $750k one has to assume the buyer is going to build an entire building for them anyway so this is not necessarily a bad thing.