We have heard from several of our Best Buy sources, however, that this is not the case. The "C2 end display" cited in the calendar listing is the location of Best Buy's iPad display, and updates to this display are fairly routine with new promotional materials or other layout changes. We have heard that Best Buy may be planning to enlarge these "endcap" displays with this event to be able to display more iPad units.
Consequently, this specific retail refresh is not linked to the iPhone. Reports have continued to suggest that Apple is planning for an iPhone release a bit earlier in the month, with the company's usual Friday release date meaning October 7th or 14th would be most likely.