According to the manufacturer (Ludovico Martelli company) the new Proraso cream without parabens has been formulated to be a pre-shave treatment only, while the older was a pre-post. I've heard some friends saying it's still good to be used as a post shave, but I've never personally used it for that purpose.
Even the old formula jars only mentioned pre and not post for the last 3 or 4 years. It has been a really long time since I saw a jar or box mentioning 'pre e dopo' on them.