According to "people with knowledge of the company’s plans" some new versions of the tablet will used Qualcomm's Snapdragon processor—rather than Nvidia's Tegra 3 chip which currently drives the device. Once source, however, suggested that Nvidia will remain a supplier for the Surface RT.
That makes it unclear whether the chips will be used side-by-side, or if the Qualcomm silicon—perhaps the Snapdragon 800—will land in a more powerful tablet. The latter would probably see the current Tegra 3-powered tablet remain as a budget option, if the sources are to be believed.
Regardless of what impact the move has on the product, it's a clear indication that Microsoft is keen to pursue its current interest in ARM processors for the portable market. Whether or not an injection of new silicon can provide the shot in the arm that the poor Surface needs, though, remains to be seen. [Bloomberg]