In particular, there are some screenshots which show table editing, insertion of images, and what appears to be navigation and forms as well. My favourite, though, is on page 37, where it looks like some user-defined paragraph classes ("info" and "alert") have been included in the formatting toolbar -- it looks _really_ slick!
There's at least one other project which is trying to make editing web content better: http://www.wymeditor.org/
I recall reading that, due to the way that WYMeditor makes the HTML structure explicity (while still keeping it relatively end-user-friendly), it tends to encourage users to produce "nice" HTML -- simply because poorly-structured HTML looks ugly in WYMeditor. :)
But wow, Aloha looks absolutely beautiful! The sooner FCKeditor and tinyMCE die, the better off we'll all be.