The new cars will feature a larger, bulgier Tridion safety cell, which, as on previous Smarts, is likely to be highlighted by available contrasting body colours.
Like their platform-mate, the Renault Twingo, the new Smart Fortwo and Forfour will feature a two-box body, with a distinct frontal area and flatter bonnet. This contrasts quite markedly with the first two generations of the ForTwo, which was recognisable by both its diminutive size and its one-box shape.
The new generation of Smart vehicles will have plenty hexagons in their detailing. These will appear not only on the colander-like grille, but also on the inside. The new cars' dashboard will have an ovoid shape, although the instruments and other elements will be round.
As we've seen in earlier concept cars, the new Smart range will have a wider stance than the current model, with styling that highlights the wheel-at-each-corner look.
This video is just the latest in an on-going teaser campaign for the new-generation Fortwo and Forfour. In addition to our spy photographers snapping the Forfour undergoing on-road testing in Austria, Smart has issued official "spy photos" of the Forfour. We've also been treated to a long line of concept cars, including the FourJoy and ForStars.