Microsoft made a big deal the new style ads in Windows 8 apps. They seems to have taken advantage of the bigger canvas offered by Windows 8 themselves to promote the Nokia Lumia Windows 8 phones.
In the above screen shot we have the the Nokia Lumia 920 in the Bing News app, and the Nokia Lumia 820 has also shown up in the Bing Sports app.
Hopefully Microsoft will see fit to use more of their properties to cross promote Windows 8 and Windows Phone 8, especially with the large ad budget they will be spending over the next few months.
Thanks Waleed for the tip and screen shot.