I too an waiting Nvidia on the I7 (with a strong preference for DX11, but willing to debate that) and USB 3 (mandatory). Since I don't turn around and sell in a year or two I tend to have these things a while and USB 3 will grow in importance with every passing year. Higher power output of USB 3 as well as a 1 plug external drive are nice perks (which ESATA doesn't have).
Anyway I "may" consider DX10 vs 11, but I do want the NV solution at least.
Bonus time might be that if it takes long enough we might see the 940XM cpu by the time Nvidia gets with the DX mobile chips. Read that AMD sold 6 Mil DX11 cards so far, which has to make NV say "oh cr*p" as AMD runs all the way to the bank
Have to see how things go. Might have to be patient for a few more months. My 1710 is still chugging along. Extended the warranty till 2011