I'm not sure if this has been covered already but here it is.
Since we know for relatively sure, that the new Mini will sport Sandy Bridge architecture, I believe that the chances of a discrete AMD GPU are pretty good.
The reasons for there not being a discrete GPU has been a lack of space. Thus far there has been the CPU and the all-in-one controller from nvidia. An additional GPU would have added a third big chip. Now that the Sandy Bridge is essentially a SoC requiring only the CPU for all functions there is space for a discrete chip. I certainly hope that Apple would utilise this in some way.
It would make sense to have the Mini available in models comparable to the MBP line. Base Mini would be like the 13" MBP and high-end like the 15"/17" with discrete GPU. That way we would have more choice in terms of headless Macs as the gap between the Mini and Pro is pretty massive.
Since we know for relatively sure, that the new Mini will sport Sandy Bridge architecture, I believe that the chances of a discrete AMD GPU are pretty good.
The reasons for there not being a discrete GPU has been a lack of space. Thus far there has been the CPU and the all-in-one controller from nvidia. An additional GPU would have added a third big chip. Now that the Sandy Bridge is essentially a SoC requiring only the CPU for all functions there is space for a discrete chip. I certainly hope that Apple would utilise this in some way.
It would make sense to have the Mini available in models comparable to the MBP line. Base Mini would be like the 13" MBP and high-end like the 15"/17" with discrete GPU. That way we would have more choice in terms of headless Macs as the gap between the Mini and Pro is pretty massive.