Cal Evans has yet again upgraded his WordPress install and has list his quick and dirty process in a new post to his blog.

The eleven step process includes making a work directory (so you don't copy over your current install and all of its lovely plugins and templates) and copying over a few key files to update to the latest release:

• Copy blog.original/wp-content/plugins to blog/wp-content/plugins
• Copy blog.original/wp-content/themes to blog/wp-content/themes
• Copy blog.original/wp-content/uploads to blog/wp-content/uploads
• Copy blog.original/wp-config.php to blog/wp-config.php
• Copy blog.original/.htaccess to blog/.htacces

For more information on upgrading your WordPress installation, check out this entry on their wiki.