Nokia, which has bet its future on Windows Phone, has launched an aggressive ad and marketing campaign designed to emphasize the unique qualities of the OS, as embodied in its first two Windows Phone handsets, the Lumia 710 and higher-end Lumia 800. The phones, and the campaign, were in London. 

It's not yet known if Nokia will be present at next Monday's event. At Nokia World, CEO Stephen Elop promised that a "portfolio" of Windows Phone devices would be unveiled for the American market in early 2012.

John Cox covers wireless networking and mobile computing for Network World.

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Email: john_cox@nww.com