Could it be that they'll replace the problem battery on yours, and send it to me, and send mine to your neighbors, and on and on? Refurb as they go, with some initial refurbed stock onhand to begin the process?
we're also awaiting the packaging -
oddly enough dh wondered the same thing

and DD has the Gen 1 nano that for some reason would just shut down - dh figured out how to re start the thing, but finally we just bought her another one (and now that I think about it the gen 1 nano we got her was a refurb one - probably from a post here a few years ago!)
so we were going to send it in, not expecting anything - and curious what would come back.