just a thaught:
we had a 1.5 just for the missing gnd and vcc, thats right. but as far as i can see this picture shows no technical change, just filling vias dont make a new version, well, its purpose could be a merchandise version, anyway.....i really dont know why the basic scientific rules arent followed, a picture it not a proof, and the sentence "[...] 1.7 is much more intelligent" doesnt make any sence at all. its kinda a really poor merchandie joke like a new car which is even more car then before...im sorry, but the way of scientific work are essential for a good discussion.
btw, from my point of view smartxx v2 is the best chip on the market in the higher class, i dont like xecuter chips as they are just too expensive.
i got a aladdin in my box, is enough for me, im waitig for the xchanger v3 with 1mb support, this chip is a awesome piece of work and is really cheap.