That's not good news, but it gets even worse once we incorporate permafrost feedbacks. (critical-angle.net)
The temperature effect of the coming permafrost feedback is not sensitive to the emission pathway that we choose to follow. (thinkprogress.org)
Again, if anyone actually wants to discuss an actual scientific paper that seems to have important consequences, I noticed «John Doe» at tamino's site has a link to the full permafrost feedback article (it's about the 18th comment down): (realclimate.org)