Matt said that there will be a large Penguin update in 2013 that he thinks will be one of the more talked about Google algorithm updates this year. Google’s search quality team is working on a major update to the Penguin algorithm, which Cutts called very significant. [searchengineland.com...]
Duane Forrester from Bing: Google Penguin Tightens the Noose on Manipulative Link Profiles [Report] [ow.ly...]
Given Duane's inclusion in the discussion's alongside Matt at SMX, and Bing's insightfulness into Google's practices , I guess you'd have to take a RT of this report seriously when managing transition through the upcoming update.