So Setra has been one of my favorite towns for several months now but I was wondering if the creator plans on updating it to supernatural? Anyone know?

Place to ask that would be in the download thread Or PM the creator.

However, really, SN is one of the easiest EPs to update a world to incorporate manually. THat's because the new rabbitholes are small enough to fit on just about any community lot, and don't require a special lot type. You might want to re-zone an existing bar to Supernatural Hangout, and maybe use Master Controller to set a couple of townies to supernatural, and that's it.

Or just leave it as it is and play a supernatural family there None of that other stuff is actually required.