If you haven't seen it yet, Kuju posted a video of their route editor. you can find it here: http://www.railsimulator.com/images/Rail%20Simulator%20world%20editor%20V2.wmv. This is the first video of the editor they've released in awhile and I have to say it's looking pretty good (and the rest of the folks at the office agree). Of course, I'm a developer first and a rail enthusiast second so I tend to notice the way the software has been designed and build. 3D editing in any context is a trick design problem and it's interesting to see some of the choices they've made.