Forum:Formatting regarding Johny Duddle editions

If you are unaware, special editions of the Harry Potter books are being released in the UK on 1 September containing, among other things, excerpts from Pottermore. Preview images of these editions are already cirulating around the web. Obviously, there should be some sort of consistent formatting in articles indicating when something is only mentioned in these new editions using the comment template, but I'm having difficulty thinking of a wording that doesn't sound awkward. Any ideas? -- 1337star (Drop me a line!) 19:28, August 21, 2014 (UTC)