The author of this article, Matt Ridley, is a known climate change denialist and of course the Wall Street Journal is owned by Rupert Murdoch and therefore operates under the same umbrella as Fox News.
Supposed leaks from the IPCC document have already been mischaracterized in the right-wing media. See, for example, Phil Plait's demolition of them here:
Or if you prefer your demolition in video format:
I have no reason to trust the right-wing's interpretation of the IPCC document before it is officially announced and I can check it for myself. Why don't you try WAITING for it to be released before you start spreading this very likely BS.