There is a spider version of the 4C coming next year. The 4C is the closest thing I think we'll see to a modern Dino and is a lot of fun to drive.
The spider that was a collaboration with Mazda is no longer going to be styled/badged as an Alfa but will wear Abarth branding instead. It has been decided by Sergio Marchionne that Alfa's are to be made in Italy though there were rumours that the forthcoming small Alfa SUV may be made in the US.
Current: F50, 246 GT (x 2), 246 GTS
Past: 360M, F430 spider, 430 Scuderia, California (x 2), 458 Italia (x 2), 458 spider, 246 GT