Kevin Gibbons reports he now has an option under his "ad variations" tab that allows him to add a "Click To Play Video Ad." I have a screen capture of a click to play video ads from Google a while back.
So it appears that Google has given some advertisers the ability to add them to their account and place them on the content network.
Google also has a page on Click-to-Play Video Ads and they describe:
Google AdWords now supports click-to-play video ads – ads that combine the power of sound and motion with the precision of Google in order to provide users with a relevant and engaging advertising experience. Video ads join our line-up of text, image and flash ad formats and will be displayed on sites that are part of the Google network.
It isn't brand new, but I have never seen it in the AdWords management console. I still don't see it in my console, but Kevin Gibbons does and has a screen capture to prove it.
Forum discussion at Search Engine Roundtable Forums.