The first version of WorldEditor that is compatible with X-Plane 11 is now available!
WED 1.6 features:
- Service vehicle parking, destinations, and routes
 - Better validation, including a text document of errors
 - Additional previews in the preview pane
 - Hierarchy searching
 - New editing commands
 - Unicode support on Windows
 - Better UV map handling
 - Tons of bug fixes
 
Grab a copy of WED 1.6b1 here and give it a try, then report any bugs on the Gateway Bug Reporter page.
(Note that this version cannot be used to upload scenery to the Gateway yet.)