I hope you're right on that... making the camera much more versatile for combining with other manufacturer's lenses. My bet is that it actually doesn't have a focal plane shutter... but it's just a guess, and I hope I'm wrong.
Making it an FPS based system will help them make smaller lenses (Considering how size is a big priority in this project) and also offer proper differentiation in the market. i.e. "If you have some H series lenses, you can use them with this camera and the focal place shutter, but if you want to sync your flash with your H series lenses at high shutter speeds, you have to use the H series cameras". The fact that they updated the H system recently to offer higher shutter speeds is not a coincidence, IMO.
A wonderful side effect of that of course, is that one will be able to use this body with a variety of third party lenses.
p.s. What would be REALLY cool is if it has a global shutter. No vibration, easy adaptability to multiple lenses and view camera solutions and CMOS long exposure. This will be THE landscape camera for some years to come.