The new free patch released w/ AoW hosed the **** out of my save games. Which isn't a problem for me, because they were all old and I'll start a new game for AoW, but basically all the new provinces they added appear to, in an older save game, be uncolonized Terra Incognita. Amusing to see central Spain totally unoccupied on those maps.
Here's a screenshot from an 1821 game (where basically the whole world is colonized) that should give an idea of what provinces are new:
I'm pretty sure all the non-wasteland gray/brown TI areas (excluding the HRE which is my country
) are new provinces.