Yup. That's the one I was talking about. That one's destined for William if Charles becomes king, as I understand it. (Of course, he'll get it sooner if QE2 outlives Charles, as she's reportedly threatened to do.)
Not automatically. The heir apparent being Prince of Wales is a tradition that requires the monarch to actually enact. There's nothing preventing King Charles (or whatever his name ends up being) not making William Prince of Wales, hell there's nothing preventing him making me
Princess of Wales. It's a gift from the Monarch, not a title that automatically falls to the heir apparent. Course, it would be odd if he didn't, but it's not quite "destined" for William. If QE2 outlives Charles I actually wouldn't be surprised if William doesn't become Prince of Wales, although I would be surprised if she did outlive him.