The Concept C (Commuter) has a brand new twin cylinder engine with CVT transmission rumoured to be a 650cc.
The styling takes cues from across the BMW range (the aluminium side pods are like a GS, also features a twin-tipped front spoiler like the S 1000 RR, but with a new look deliberately designed to stand out from existing scooter designs. Read more.... http://www.pistonspy.com/spyshots/bmw-concept-c-e-scooters-production-prototypes