i believe in the donators section he gave us the map generator....i could be wrong....maybe donate to find out
Heheh. The map generator is what I used to make the fractals. It's not really the same as what Moonkey is talking about. But I have posted the info that others would need if they wanted to make one. I have no reason to make one, really.
I will add flying very soon but: a) it's probably not the flying you are thinking of (it's avian style flying not anti-gravity hover), b) it will probably be a donator's only feature.
A flying feature for non-donators could be that a.) flying isn't as good, say you may fall out of the sky after 30 sec. - 1 min of flying; b.) allow flying height to be less [ say donators can fly all the way up you're allowed to, non'ies can only go up 25-50 blocks. ]