I did a quick search on this and didn't come up with anything. I travel internationally a ton (I'm generally on every continent except Antarctica at least once every year) and I've ordered myself a Mini 9 as a new traveling companion.
Does the stock AC Adapter support 100-240 volt and 50/60 Hz? It would be nice having to only carry plug adapters around and not also a converter. If it doesn't I assume that some of the third party adapters that are available are also compatible with the Mini 9.