Andy Revkin seems to be excitedly pointing to a Leak of IPCC Drafts.
Frankly, I'm surprised it took so long. And since the review period is over and the next round of revision is probably already underway, it doesn't seem particularly useful or important. For that matter, the drafts were freely available to anyone who wanted to sign up to review them anyway. Revkin think this leak means some "new process" is needed, but I don't see any real arguments presented.
FWIW, I thought the second order draft (at least, the bits I looked at) was mostly pretty reasonable, certainly improved a lot on the first draft. One thing I do find a bit unsatisfactory and unecessarily obstructive about the process is that there is no way of seeing replies to the first set of review comments, so the system is rather crippled compared to a normal peer-review process where reviewers and authors can have a proper exchange of views. This has a real impact when comments appear to be ignored - the reviewer has no way of knowing if the authors' counter-argument is strong, weak, or whether the lack of action was simply an accident. The latter happened this time, in fact, but it took a private email to a relevant IPCC author to find that out. They assured me that the small oversight would be fixed for the final version.