Post on AKG forums claiming they're all made in China: http://www.akg.com/forum/index.php/topic,3098.msg7691.html#msg7691
This is complete hearsay, so it should be taken with an enormous grain of salt, of course.
According to those links, no one has really heard or seen a pair of made in China K701.
I know K240mkII and K271mkII (and many low end phones) are made in China now, I've directly compared made in China version and made in Austria version and found no sonic difference between them. I'll probably do the same comparison if there are any made in China K701s.