That isn't as unlikely as you might think... the atmosphere can have lighting effects of it's own, not to mention it's ability to diffract and bend light. It doesn't look too unrealistic to me, especially considering the phase of that planet.
As to my own stuff, I'm working on it kinda sporadically. The version of GIMP I had before this was very *****y with high memory usage and kept giving me GLib memory errors and crashing at most inopportune moments and saving after every process got frustrating and I let the planets rest for a while, then went to spend the Easter at my parents' and came back day before yesterday... Haven't tried the latest version of GIMP with high stress conditions yet, I'm hoping it'll be stabler.
I'm hoping to get all the retail planets done in new form before the new MediaVP's are ready so I could make one package of them and send to DaBrain. I'll probably then upload all the rest of the phases of the new retail planet versions, and possibly other stuff as well, as a planet repository for mission/campaign/background designers to use.