XHTML 2 is designed to be recognizable to the HTML and XHTML 1 author, while correcting errors and insufficiencies identified in earlier versions of the HTML family, and taking the opportunity to make improvements.
I wish I didn’t have to admit to reading the XHTML 2 working drafts and the CSS 3 working drafts, but I’d be lying. 
Keep in mind, this is very much a work in progress, there are constant changes, and full XHTML 1.1 support isn’t even widespread yet. Also, it’s important to note that in relation to CSS 3, full CSS 2.1 support isn’t even widespread as well…this is more of a dream right this second, but damn it looks like a nice future.
Wandering the Interwebs 