I made a few minor changes to the 2010 Cataclysm theme they are listed here. If you just want to update the files that were changed, upload the new style.css, and the blizzbg.png in the images folder.
I’d like to see any sites that are using this theme, I know of several so far, so feel free to post your link on the theme page or email me with the contact form and I’ll add it to the list.

1.2 Beta changes.

Styled the menu navigation a bit, added dropdown color and opacity.
Cleaned up the block quotes background image.
Changed the RSS feed in the left block to read MMO Champion by default instead of my own wowarmory.
Changed the font size for better readability.
Added a small bottom margin to the sidebar for sites without alot of content which prevents the sidebar from running down into the footer.
Added a forum page template for use with the Vanilla Forum embed plugin and my new matching forum theme.

Things to do.

Fixed author bio avatar, issues with the border.
Add “next and previous” links to the grid page. (can’t believe I didn’t notice that)
Add a forum theme. Not sure if I’ll go with vanilla, or maybe mingle, tired of waiting on the bbpress plugin.
Change font color for better readability.
Move the comment avatar selector above the comment box so it’s noticed better. At the moment it breaks the plugin if I move it and I’m not sure why.
Add style support for other Warcraft plugins.
Change the blockquotes style to use it’s own short tag and restyle regular blockquotes to look like in game npc quotes.
Fix various issues with image alignment.
Fix issue with long post title spacing
Add a layout switcher options pane