I assume the iPad 2 hasn't lost the original's capability of outputting VGA.

Edit: the reason it's a big deal is that the original iPad had to have the app specifically coded to deal with the external screen/projector (and few are). The new version just lets you mirror the content, whatever app you're in. It'd be nice if the new iOS retroactively made this possible on the original (at least at same resolution?) but I kind of doubt it. We'll see next week.