My copy of Nicholas Perrin, Thomas, the Other Gospel (London: SPCK, 2007) arrived today and I am looking forward to reading it. Although Nick is based in the US, at Wheaton College, the book has been released in the UK ahead of its US release. It's already been noted by Michael Bird on Euangelion. I am going to try to read it this weekend and I hope to comment.
Update (Saturday, 16.52): April deConick registers a major protest about Nick Perrin's misrepresentation of her position on the Forbidden Gospels blog. I've not yet got to that part of the book yet, but hope to post my thoughts about the book in general in due course.