in theory they could be faked... that said from the look of the photos i would say they are likely real. however pics of things from trade shows even do not mean that they are going to be publicly available any time soon. simply put we all know they are coming out. the fact that those products will eventually be available is for sure at this point and if you got by the various (and somewhat sketchy) reports in the public realm you know that there are some mobile DX10 video cards scheduled from nvidia to be released approximately with santa rosa from intel.
also remember that despite there being pics of "mxm" versions of the lower end 8XXX series mobile cards from nvidia does not mean that all the currently available mxm notebooks will be for sure able to upgrade. the ability to upgrade is still dependant on bios support, as well as power and heat requirements. this means that there may still not be an upgrade path from machines currently fitted with mxm versions of cards such as the go7600.
either way i am sure its good news for those who are eagerly awaiting a DX10 video card in their notebooks. though it is interesting to note that there is no go8800 in those pics. certainly they would have released those pics if it was coming so not only does it confirm to a large extent that we will indeed see some 8 series cards coming for notebooks but it also shows no sign of the high end which is exactly what those in the industry have been saying.