(unaware: this is about a free terrain synthesizer and renderer in development. find out more at #
picogen 
)
I don't know, but that little and really small preview on the lower left is something I would really like myself (or better: I already like it very much).
Also, as you can see, the sun-sky-editor is already integrated into the next GUI.
Oh and, another new feature is "stashing". You can save and restore basically each tab (or more) at any time, and even save that "history" to file on disk. So if you found a cool spot or really nice atmospherics, you no longer need to backup the whole scene, but just press "stash", then "reset" to search a new spot or ambience, and if you dislike, you can just go back

Critique is very welcome
