Ah they way I read it, anyone that bought it at Alpha got any little updates, whereas anyone that bought it at Beta won't get those little updates, just the completed game when it's finished, or possibly major updates as well in the meantime.
Anyone playing single player found any fun map seeds?
There are threads on various forums discussing this, but they seem to be mostly populated by incredibly stupid idiots, who don't have any sense of what a good map is. :(
( Or, probably more likely, they're just content doing "me too" posts instead of trying to list interesting ones. :@ )