I talked to the Creed guy in SF about this. Apparently, it was a limited edition release for Mothers Day back in 2007 or so. Much like Windsor, it was supposedly a very old formula.
They had a tester and I tried it. If you like the old, slightly weird Creeds like Windsor, you'll probably like Amalfi Flowers. It's kind of sour and vinegar, played against very real-smelling flowers and interesting Bois Du Portugal-style woods and weird old spices. It definitely smells like an old recipe.
If you've tried their other classic offering, Fuille Verte, it's kind of like a flowery version of that. Sort of.