My best guess is that the funny shape top tube is the top tube plus a wedge storage box that cleans up the top tube=head tube transition.
In terms of the down tube the bike looks Di2 so I wonder if that is where they are hiding the electronic gubbins. They wouldn't be the first to come this solution and it may have given them more freedom when designing the front end of the bike. What would be real neat is if alongside the electronics there was a hydraulic hose quick connector so you could really play around with the front end without having to re-bleed the brakes. I don't think that is possible though unless the front brake cable loops around.
In terms of the down tube the bike looks Di2 so I wonder if that is where they are hiding the electronic gubbins. They wouldn't be the first to come this solution and it may have given them more freedom when designing the front end of the bike. What would be real neat is if alongside the electronics there was a hydraulic hose quick connector so you could really play around with the front end without having to re-bleed the brakes. I don't think that is possible though unless the front brake cable loops around.