Microsoft Surface is still the top device based on usage statistics, though its doesn't command the Windows 8 market the way it did last month.
Nokia's Lumia 920 top of the sales heap for Windows Phone devices.
By eliminating licensing fees for the OS on devices with a screen smaller than 9 inches, Microsoft is placing a bet on rapid expansion over revenue.
Microsoft's tablet is the most popular Windows 8 device -- at least according to numbers cited by a Windows ad-serving business.
There are at least two new Windows ARM tablets in the pipeline: The Microsoft Surface 2 and Nokia 'Sirius,' according to evolving rumors.