I have to say, though, that I'm having a hard time loving Fox. I don't dislike the new ones, they're just not as good as the Rebus ones. Rankin no doubt knew that going in, that he'd have a hard time pleasing his fans ... so I give him credit for at least trying.
And I think Rebus will be involved in the detecting in the new book -- although in a civilian capacity. Sort of a "New Tricks" idea if you're familiar with that series. It should be very interesting to see how Rebus & Fox interact!