Are there plans to port GPlates to Qt5? Qt4 is no longer available for my distribution unless I compile it myself, and that’s becoming increasingly difficult due to changed dependencies elsewhere along the build chain. Admittedly, I’m using Arch Linux, which has a (not entirely undeserved) reputation of being a bit ahead of the pack and more liable to breakage. From what I’ve read, Qt4 itself is unsupported upstream, and has been for a few years now.
I’d be happy to test new versions—I’m using GPlates for my own personal worldbuilding project, so there’s no PhD thesis or research at risk here if something breaks. (I’ve also learnt the importance of regular backups the hard way 
)