The Wall Street Journal is also reporting about it,
blogs.wsj.com/digits/2009/06/1 ...

I assume they'll look like the current product ads with plus boxes:

farm4.static.flickr.com/3274/2 ...

I can't wait for them to ask me.

Peter Moore
[signature removed]

And so we begin our journey to image ads on Google SERPs... :-(
Adblock, here I come...

Veky:
If you look at the screenshot, you'll notice that Google shows more information about the products (including images, videos, prices) only by request.