Liferay 6 Release candidate is out. Liferay Portal 6 Release Candidate Released. Here are few screenshots describing overall improvements , new features.

Overall better navigation

Single Click access to add WCM Content , Assest Publisher , Search etc.

Sitemap -> Manage Pages

Page -> Manage Page

Page Layout -> manage the  Page Layout , if page is created using a page templates.

New Portlets-

Workflow Configuration, Page Templates , Site Templates ,  Custom fields.