I doubt the 1710 will see many more upgrades other than maybe a video card upgrade (if there is anything coming before 1st quarter of next year). I think what we will see is a replacement system (M1720?) in the first quarter of next year with a possible DX10 card and the Santa Rosa chipset with the second generation Merom processor.
Yup, other than perhaps graphics (if you are lucky) I very much doubt there will be any major upgrades for the current range of laptops. Why do that when they could produce a whole new range and get everybody to give them more money?