I don't think the RAD languages really died, their most useful features just become so standard that they stopped being notable. Visual Basic .NET and C# have

I don't think the RAD languages really died, their most useful features just become so standard that they stopped being notable. Visual Basic .NET and C# have more-or-less exactly the same tooling for developing UIs, for example, and on the Apple side of things there's still Interface Builder. I could see something similar happening with dynamic languages. Over the past decade, the things that once irritated me about working in static languages have largely been addressed as features like generics, type inference, and interface polymorphism became more common. But I can't imagine dynamic languages will ever go away, if anything because they're still so successful in the scripting domain.