I also work for Target in the electronics department. the electronic reset is due oct. 3, but My store has already recieved all of the updates previously mentioned and there were no Iphone, or any other apple products introduced. however, my store is still selling the old ipods with a "revision" due sometime in oct.
As for the 3rd, it is a very possible date. in targets system, all things new are released on sundays ie. department revisions and new products. Depending on when we receive displays and other promotional material, it could be the day that an item is released, or up to 2 weeks before we can get the new products out.
As for some stores recieving signing for the ipad, my store recieved signing for the iphone 4 a couple months before its release date. and some stuff to set up a small endcap. however the endcap that was in question was owned by verizon....which led to some excitement for us because we had assumed that verizon would have an iphone. The date came and went and nothing happened. the date for the signing was july and expired the next month. we still have the display stuff, but target never recieved anything else.
I also have a guy checking on the pda picture to see if that item actually comes up on our pdas...but, it will only check our region, so if our system is not as updated as the one in the picture...it will show nothing.