It seems that software center is currently looking screenshots from solus-project.com. Could the appstream data be refreshed so it would point to getsol.us?
Fixed. Thanks @DataDrake for sorting out the appstream data.
@Staudey I would've fixed this however I couldn't get a successful rebase (as in, I got it to rebase but not actually get the tools to function) of the eopkg format support patch against the latest version of appstream utils. As my server which holds the my local copy of the repo is running Fedora, it proved to be further problematic when also accounting for the appstream utils dependencies at the time.
Fortunately, Bryan has since had the opportunity to upgrade some of his local hardware and as his local copy is running on a host which is running Solus, it was less problematic for him to build new appstream data against the current version of the appstream utils, and thus resolved this issue. All I had to do was deploy the screenshots onto the web server.