Wrote a long comment and then the web bug ate it :-(
In a nutshell: it's more of an introduction to GNOME Shell, which is just one part of GNOME3. It's going to be used by default, by old interface will still be available for those who want it. The UX is probably the least finished part yet, since a massive amount of work first went in invisible improvements for v3 (such as gobject-introspection).
Something the HN crowd will like: the Shell is written in JavaScript, has bindings to low-level libraries using gobject-introspection, uses JS libraries like jQuery, and comes with its own FireBug-like tool for inspection and modification at runtime. Since most of the look&feel is done in JS, you can just jump right in and hack left and right. One of most impressive demos at GUADEC2010 had a couple of JS oneliners doing various special effects on the desktop. Also, the whole thing is themeable in CSS, which is a lot nicer than doing gtkstyle theming.
In a nutshell: it's more of an introduction to GNOME Shell, which is just one part of GNOME3. It's going to be used by default, by old interface will still be available for those who want it. The UX is probably the least finished part yet, since a massive amount of work first went in invisible improvements for v3 (such as gobject-introspection).
Something the HN crowd will like: the Shell is written in JavaScript, has bindings to low-level libraries using gobject-introspection, uses JS libraries like jQuery, and comes with its own FireBug-like tool for inspection and modification at runtime. Since most of the look&feel is done in JS, you can just jump right in and hack left and right. One of most impressive demos at GUADEC2010 had a couple of JS oneliners doing various special effects on the desktop. Also, the whole thing is themeable in CSS, which is a lot nicer than doing gtkstyle theming.