I have seen the newest ad format in my own site. Here's the screenshot: http://forums.digitalpoint.com/attachment.php?attachmentid=3667&stc=1&d=1154253587 Right after the image displayed (which isn't anything new) you see a sentence "See more sponsored links >>" which elaborates the image. Anyone seeing the same?
Well I think google have been doing their research. The image blocks have started to increase CTRs so I think google are starting to put them as standard now.