Unfortunately weight is still "TBD." There are plenty of other interesting things on the US Spec Sheet which is in PDF form. These things include overall dimensions, passenger compartment dimensions, gear ratios, compression ratio, maximum boost pressure, rev limit.
I'm excited and I'm still saving money to get one. Probably won't be until this fall though since I don't want to pony up the $70k (uncited, I saw this some place) for a launch edition.
I promise everyone here that if/when I purchase one, there will be a proper review with corner weights and a dyno pull.
Photo credit: Alfa Romeo