spacedog: seems you are correct:
http://www.engadget.com/2012/06/11/apple-tomtom-ios-6-maps/
Guess that means that turn-by-turn should be pretty decent then? I haven't used Tom Tom here, but I know they sell lots of GPS devices here over the years. I always see them in DSE, Noel Leeming, etc...
I've been using the Tom Tom app for a few years on my iPhone and it's been really very good.
If they are a partner in the Apple maps venture, I expect good things...