I think you are referencing this WPN video:
Google Changes Algorithm? » WebProNews Videos
Here is the Sphinn thread on the article that WPN obviously used to create the video:
Sphinn - Google's Algorithm Awarding New Pages?
Google's Algorithm Awarding New Pages?
Bottom line is that Google has always ranked fresh content a little better than it truly deserves for a 2-3 weeks. I have seen this for years.