I don't know if these are just leftovers from Symbian, but the Harmattan SDK icon folder contains application icons for: icon-l-att.png icon-l-accuweather.png icon-l-ap.png icon-l-facebook.png icon-l-firefox.png icon-l-flickr.png icon-l-galaxy.png icon-l-gigfinder.png icon-l-grob.png icon-l-gtracing.png icon-l-journeys.png icon-l-layar.png icon-l-needforspeed.png icon-l-ovi-music.png icon-l-picasa.png icon-l-qik.png icon-l-realgolf.png icon-l-shazam.png icon-l-track-protect.png icon-l-twitter.png