the jdome looks promising, but not sure how they can create accurate pixel size/geometry and image focus on the outer part of the dome with the projector placed behind it.
any development that increases display size is good news, time will tell if the video quality is good enough.
a multi monitor type of setup is probably the most viable alternative for most of us right now.
http://www.maxconsole.net/?mode=news&newsid=23996