I wrote a artichle to IBM developer's Works site. This is the introduce of OpenLaszlo v4.1. I am sorry but it was only Japanese. You could see it at here.

”RIA/AjaxにもWrite Once Run Anywhereの波”と言う題で、IBMのdeveloper's Worksサイトに寄稿しています。v4.1の紹介記事です。