The blog post states that the changes are there to anticipate future products, blah, blah. The things that seemed a little more interesting were the following two statements:
- "... we've re-worded some portions of the terms to make them applicable across a broader array of media and formats ..."
- "... According to this policy, publishers must notify their users of the use of cookies and/or web beacons to collect data in the ad serving process."
The full post can be read on the Inside AdSense blog here.