LG is releasing 23" "invisible bezel" monitors
Also, 27" ones, but they are 1080p still, so blah.
These monitors are looking ideal for multiple display setups. 1.2mm bezels. 2.4mm of "line" breaking up your image is not too bad, and better than a lot of things right now.
Here's hoping that they actually come out at an affordable price!
*Edit: After looking at them some more, I'm sad that the bottom still has a chunky bezel. It's my dream to do either 3x1 or 5x1 with the monitors rotated to portrait.