Props to Elliotte Rusty Harold for outling the changes in XHTML 2.0

in bullet-form. I will reprint them here, for the curious, since Elliotte doesn't have permalinks.

The applet tag is repleaced with the object tag.
The img tag is repleaced with the object tag.
Forms are replaced by XForms
Events are replaced by XML Events
Frames are replaced by the as-yet unreleased XFrames
All deprecated tags from HTML 4 are removed.
The href attribute can be attached to most elements so that any element can be a link.

I wish the W3C would do this.