AppImage for Linux is available for download at the main page!
This version brings a change in the packaging format only: we have bundled the SSL libraries into the AppImage in order to fix a compatibility issue that was uncovered when running PhotoTeleport under ArchLinux (but that could affect other distributions as well). We have also included a newer version of Qt (5.9.4), but this is unlikely to bring any changes to the program’s functionality. The code of PhotoTeleport itself has not been changed since the first version.
A new beta with some important changes will be out in the near future; but meanwhile, if you are a Linux user who could not use PhotoTeleport at all, please have a try at this build.