I'd have been shocked if they were anything short of excellent, given how good the Nex 5 was. And I'm sure they'll be pretty stunning with that Zeiss leading the way. If the lenses worked for me in that size/IQ compromise spectrum we all stake out our points along, I'd be all over Nex. As is, I'm happy enough with the IQ of m43 and love the small primes in a way I don't think I could ever love the Nex lenses unless they figure out how to make 'em with the likely quality of the Zeiss at much closer to the size of the 16...
But if the Nex 5n or 7 DIDN'T turn out great files, THAT would be the man-bites-dog story...
-Ray