Reviews of the prototype sound good:
http://www.topgear.com/car-reviews/124-spider/first-drive-0
http://www.carmagazine.co.uk/car-reviews/abarth/abarth-124-spider-2016-review/
http://www.autocar.co.uk/car-review/fiat/124-spider/first-drives/2016-abarth-124-spider-prototype-drive