For the last few weeks I've been working in a new WYSIWYG editor for Liferay 6. It's the new version of FCKEditor, called CKEditor.
Which are the improvements of the new version? The main improve is accessibility: it is WAI-AA and WCAG 1.0 compliant. It implements advanced screen readerssupport, it's fully keyboard navigable, it has natural TAB key usage with tabindex support and operating system High Contrast support.
It is also compatible with most Internet browsers and operating systems, including Internet Explorer 6+, Firefox 2+, Safari 3+, Google Chrome and Opera 9.5+:
You can read more about its features in their web
And here you have a screenshot!
isn't it beautiful? :)