note element in XHTML 2.0

I've not followed the development of XHTML 2.0 much, but looking at the 
spec there is one missing semantic structure I think would be quite 
valuable: note.

This would fill the role of a footnote or endnote structure common in 
print-oriented formats. Indeed, people are already adopting workarounds 
to implement something like this with XHTML 1.0 and CSS, but it's 
hardly ideal. I'd rather be able to just do <note>Some note.</note> 
inline and style it with CSS, a la lists.

Bruce