Dual External Monitors on Sandy Bridge Core i7 XPS 17 when using Integrated Graphics

Does anyone know whether it is possible to drive two external monitors when using the integrated graphics (as opposed to the discrete graphics) on the soon to be released Sandy Bridge Core i7 XPS 17? I'm interested in WiDi here since I want to know whether it is possible to seamlessly switch between integrated and discrete graphics while driving two external monitors (i.e. one monitor via HDMI and the other via mini display port).

Is it possible to drive two external monitors when using the integrated graphics for the current generation Core i5 based XPS 17?