[estacado]

I think Adobe is working on something like this. Though Dreamweaver leaves much to be desired, I think what their working on is something completely different. Plus, the announcement that they're committed to HTML5 is more or less a hint of this. My guess is that it's something like Adobe Flash Builder, but instead of Flash, it outputs HTML5.

[proexploit]

I've tried Adobe Edge and the biggest issue I found was with the amount of HTML output and the human readability/context of elements. There seemed to be a lot of wrapper elements used in succession and named long, generic names with numbers. In my brief trial it looked OK in the browser but due to the excessive HTML, it would be a huge burden to edit in anything other than Adobe Edge if you wanted to go back and change anything. In a text editor, I can create a page using only 20% of the elements Edge did and have the opportunity to name them something relevant (e.g. #author_info rather than #generic-1-3-15).

[Xixi]

Are you talking about Adobe Edge? http://labs.adobe.com/technologies/edge/