I haven't read Plantinga's new book, obviously, so I can't comment on whether the relevant chapter gives tacit-cum-explicit support to Intelligent Design theory. Given what I have read by Plantinga in the past, however, I'd be surprised if he didn't give some support to ID beyond the vague claim that God created and designed the universe as a whole. Plantinga has always argued that the cognitive powers of human beings could not arise from a merely naturalistic process, which must surely mean that there has been supernatural intervention in the detail of what cognitive powers we have ended up having. How is that not a form of Intelligent Design?
Anyway, the debate goes on. Michael Ruse has something nasty to say about everyone, but he does seem to score points against Plantinga here.