Google Adsense Graphical Commercial

Some say (unknown ,very trusted source) that if your Google Adsense Commercial one day turns to be Graphical , Picture Based instead of a usual and commonly known text box , this will mean a world to you , and it will seem that Google's finally (automatically) proposes and puts a good and valuable Commercials on your Site , and that means , that some Adword Campaign User paid a good deal of money to be posted exactly on the Site like yours ..understand ?