looks like an advertiser decided to make his long image to looks like a text beside an image where it goes to a link on youtube, it can be done with Adwords tools.
I think that some big partners of google can negotiate the look of the ads or their website's pages! i've seen ads by google that do not looks like the adsense formats that everybody use!
It is not new friends. It is ads from a premium adsense user. Premium users can configure this type of ads.
For me, here is the BIG question. Are they CPC (good), or CPM (bad)? Text ads are typically CPC (but not always, text can be shown as a graphic). Image ads are typically CPM. . .
That is not a new kind of Ad,its just fake.. here is the list of all Adsense Ad formats https://www.google.com/adsense/static/en_US/AdFormats.html