Just a quick update...
Popped in to my dealer at lunch to see the new BV10 in black. Impressed with the finish. It's definitely not glossy. Not matt either, somewhere inbetween. It's a decent finish. More like a really dark grey than solid black, but that's perhaps the lighting in the store.
Looks better in the showroom than in the photos.
Slightly confused about the Bang & Olufsen white/light grey lettering on the top of the TV though. Looks a bit snobbish to me. Would have preferred a more subtle colour. Doesn't need to be that obvious - white/light grey lettering on black is very obvious and I think you'd easily see the lettering when watching TV.
Still not 100% sure whether I'd get bored with an all-black TV after a year or so. I guess it would look superb in an all-white room!