This detail was suggested but never explicitly stated, based upon the two postings I linked to above. The first suggests that replaced products will be "newer." The second suggests that this only applies in the US. Still, I may be wrong here because "newer" doesn't necessarily mean new enough to have the improved cable. I guess I got the impression from turkishdelight that they're carefully monitoring this problem and returns (in the US) and making sure replacements are newer, thus why wouldn't they send back the improved product? Perhaps they have a certain amount of backstock they need to go through. Still, I posted this domestic vs. international replacement policy on the above referenced thread... that your replacement will have the new cable if you live in the US... and neither Sugarfried nor turkishdelight corrected me.
Regardless, Shure's warranty and extra-warranty coverage on this is a huge comfort.