HTML5 has a number of new semantically meaningful tags.
See here for a painless introduction:
http://www.techradar.com/news/internet/why-html5-is-here-today-and-not-20...
Block tags include:
article
aside
footer
header
nav
section
Inline tags include:
details
figure
mark
time
Then, there's the canvas, audio and video tags.
We can actually support many of these tags with only a minor change in
to the panelGroup tag.
In addition to the currently allowed "inline" and "block", I would add
the following:
span
div
article
aside
footer
header
nav
section
figure
mark
details and time deserve their own tags, I think, as do canvas, video
and audio, and are not part of this proposal.
We may wish to consider deprecating inline and block. We've never
deprecated attribute values before, but hey, first time for everything.
Note that for backward compatibility with particularly lame (IE)
browsers, a shiv needs to be included in the page, as found here:
http://code.google.com/p/html5shiv/
Whether this would be included automatically, should, I think, be
implementation specific.
Please comment on this proposal, and I'll add it to the spec issue
tracker after we have consensus.
Jim
P.S. Molly's HTML 5 talk at Rich Web was a good one - can you tell?