Andreas09 has CSS support for both vertical and horizontal PHP Layers menus. The horizontal menu can be used in the navigation bar area, or conventional HTML links can be used there. Edit the theme's tiki.tpl file to specify the menu, etc.
Tiki's Site Identity feature is supported. The Site Identity content is placed within the colored area at the top of the page, and can be text or logo image, along with a banner zone, etc., as configured on the Admin Site Identity page.
The theme files include module templates in which tables have been replaced with divs and spans, consistent with the template approach in this and some other new themes.
See Andreas09 for more information, and enjoy!