Google shortening it's name in AdSense?

After making a post a short time ago (this post moved to rest before it), I ran into an interesting site; in place of 'Google' in the AdSense banner text "Ads by Google", there was the small Google image, used in the address bar or tab, for those browsers that support it.

This was for a 300x250 banner - the 468x60 also used continued to have 'Google' written out.

This is an interesting development, and I'm curious as to what else this will bring.