They switched mine overnight to the ad-supported as well.
So now I see little padlock symbols all over the place on my treasure chest panels. It still lets me teleport (even though it says it won't). My higher-level skills are padlocked, and my "Capture Althea" quest is now padlocked, too. I haven't played long enough to figure out whether I can still gain experience. Oh joy.
It looks like they also did a patch overnight, but I don't see any release notes on it. For example, above each player's head I can now see their level and whether or not they're in a guild. Did you "unlimited" players get this patch last night too?