The DMXzone roadmap has been pretty stagnant for some time now...
The new extensions (which aren't really new at all anymore) are only partially useful because they can't fully replace the "previous" way of doing things. For instance, every time I have to deal with file uploads, I'm stuck with using the deprecated extensions which work with Pure Upload (ASP/PHP) extensions, or those of your competitors.
You've gotten off to a good start with HTML5 Data Bindings and this Updater extension, but we really really need a new way to handle file uploads that works with the Updater extension. When is this going to be available?
On this same topic, we also need new ways of handling form validation and mailers. These are all on your own development roadmap, but when can we expect to see these things? Only then can we really replace older ways of doing these things in Dreamweaver, and I am really looking forward to that.