The new google format?

Hi, I started seeing a new google format a while back you can see it at the top of the page here.

http://www.twenga.co.uk/search.php?q=fishing&u=q

I checked my adsense format pages and couldnt see it. This was about 6 months ago and I still cant find it.

http://www.google.com/adsense/static/en_GB/AdFormats.html

Am I missing something or is not available to everyone?

Thanks,

Darren.

I believe some large websites work with Google to create custom ad formats which better match their site design. This is not an option open to everyone.

some of the websites are premier member of adsense. They may have private agreement for customizing their ads