There is on the Boom site, and it certainly doesn't look like regular cattle class

https://boomsupersonic.com/static/images/overture-experience...

Yes and pre-launch renderings of the interior of the Dreamliner featured a piano bar and all-round led screen walls.

Interior buildout in planes is always at the discretion of the airline, and the concepts shown by manufacturers should not be taken as realistic.

I can't see how that seat could possibly transform to lie flat and it's a dud if they try to get people to pay big money for non-lie flat seats.

I guess the idea is that the trip is such a short hop that you don't need to lie flat. For example train seats in first in the UK aren't lie flat either, because they're only ever a few hours at most.

I'm not sure lie-flat is a must if the flights are so much shorter. I'd rather have a comfortable seat for working if we're only talking about a 3 hour flight.