[discordian]

He may wish it was dead, but I can assure you there is probably more PSD to HTML work going on now than ever before.

First of all, it seems the author is not even opposed to the idea of mocking up a design in PSD. He just thinks that responsive design and advances in CSS have altered the process somewhat. OK, point taken, but this doesn't make the overall concept of PSD to HTML obsolete by any stretch of the imagination. The majority of designers will always favor mocking up their intended design in a program like Photoshop, and using that as a starting point for the development process. Responsive design just adds an additional layer of complexity, which may call for additional mockups.

I've heard people advocate prototyping concepts directly with HTML/CSS, but this is ultimately a rather inefficient way to work if you are a detail-oriented designer.

As far as the actual workflow changing and becoming more iterative, it completely depends on the context. Not everyone works at a company like Treehouse that has a team of in house developers and designers. Many website projects - the majority even - are the result of small businesses subcontracting the process out to various companies. It's not always possible for the designer and the developer to be in the same room. So as an ideal - sure, the designer should be involved throughout the process, but this doesn't always match the reality.