although I've had Outerra installed for long enough that there have been multiple releases, I never started building communities in Outerra until the current release. Since it looks like a new release is coming at some point, I find myself wondering if new world data will overwrite my communities.
I seem to recall a note appended to somebody's mod saying that it would overwrite anything that had already been built on the same coordinates. Especially considering the addition of cities, it seems likely that a lot of new data could get written over areas where people might have created their own towns
A friend of mine is currently building a medieval town for an animation which will probably still be in process when the next version of Outerra is released, and he's concerned about the possibility of losing his town if Outerra automatically updates.