I'd bet money that the crown is not a light/LED as some have suggested. I don't see how that would actually be useful. It also looks identical to the design of the S2 Edition's black crown and the S0 Edition's colour-matched red, black and dark blue crowns.
Only time will tell whether all or some of the new models feature such a crown and whether the new face will only be available on the new models.
It could be that the face will be available on all models and there's an option for changing the colour of the hands, as there are on some existing faces (that'd be nice as I think it looks like a nice face design!). Only a couple of days until we know for sure!