The sad thing is that the Atoms that have on-die graphics are using some pretty old tech - PowerVR SGX535s or 540s I believe - think iPhone 3 but running a bit faster.
The PowerVR 6 series is far more advanced, as is the ARM Mali T604. You might even get drivers for the latter, good luck getting open source drivers for the PowerVR on Atom chips.
As regards to next year's Atoms ... Cedar Trail is next year's Atoms now, delayed several months already because Intel can't get the graphics drivers right.
Nah, I'll stick with the proven ARM tech myself. I don't need x86 for anything. Windows 8 will come in an ARM variant if you really want to run that.