BMW has built some fairly creative two-wheel vehicles in the past, so it should not be so surprising that it is working on a new, large-displacement scooter. With the Suzuki Burgman 650 and Honda Silver Wing apparently successful in most markets, and growth expected in this category by several manufacturers, BMW is probably smart to head in this direction.
Displacement? Don’t be surprised by scooters displacing 1000cc or so, in the next few years. A new BMW might be one of these.