From the articles I’ve seen, this is going to be priced very upmarket–around $800 or so. Now mind you, Dyson seems to be printing money for themselves with their V15 Detect, so there is clearly precedent for an expensive cleaning appliance like this.
However, my biggest concern is that it doesn’t appear to have a user-removable battery (I hope I’m wrong). Steam generation will inevitably be demanding on batteries - even a great pack design will die eventually.
If the battery is not replaceable, it’s a non-starter for me: I cannot fathom paying MSRP or even a 40% discount for a product that will need to be thrown in the garbage once its battery inevitably fails.