Google Adwords: How new are those arrows?

Whilst checking that the previous blog entry had loaded properly, I noticed something new about the Google Ads (that no-one clicks on):

Two little arrows that allow visitors to browse through the Google Ads relevant to my site. At the time of posting this allows for users to see 11 relevant ads, rather than the restricted two that the size of the box would allow. Will this suddenly increase ad revenue? Will people ever browse through?

What really annoys me is that I have no idea if this is totally new, new to my site, or something I have just never noticed before.