If you follow the developers' list, you already know this, but since we are getting ready for 5.0 RC I thought it would be good to post here to get more visibility:
GerbView now supports the GAL (OpenGL / Cairo) graphics engine. You can switch using the View menu just like in PcbNew.
This change is mostly visible as a performance improvement, but there also a few other tweaks:
- You can pan with the right mouse button
- The measurement tool is available
- Selection disambiguation now uses the same highlight effect as PcbNew
- You can choose arbitrary colors for layers
Any of you who use nightly builds and work with GerbView are encouraged to try this out (use OpenGL unless your computer doesn't support it) and report any bugs you find to the tracker: