The dynamic code boxes are still a major part of it, but now you can write better looking/organized descriptions around the code. You can add code in raw Markdown, but you won't have the syntax highlighting, tab indentation, auto-indentation, etc. The idea is that you can type code in a code friendly editor and describe it in style with Markdown.
Have any of you tried Medium.com? They've got a very clean page editor. It doesn't have any borders around the inputs and uses only placeholders to designate where to input content. I think this look might be good for our new page editor. I'd like to take this site more in a content creation direction. Somewhat like Medium but with an emphasis on code.
Pay attention to the tabs on top. There are 3 modes: Hybrid, Raw and Preview