You got to wonder where people get their information? Marketsaw in an article has stated that Lucasfilm is now prepping a new Star Wars trilogy, to be filmed in 3D with Steven Spielberg and Francis Ford Coppola directing chapters and George Lucas just producing, depending on how James Cameron's Avatar peforms. http://marketsaw.blogspot.com/2009/10/exclusive-lucasfilm-gearing-up-another.html This was quickly rejected with Quint at aintitcool getting a response from Lucas's public relations department-http://www.aintitcool.com/node/42788 that denies any new movies are being worked on. Lucas has stated his intention to make 3D versions of the current movies even though work has been put on hold while the current live action TV series and The Clone Wars animated series are in production.
Check your sources!