At this time the main honey flow is done. The small flow from goldenrod is now also slowing. The bees are now transitioning from nectar gathering to winter preparation. The hive begins by raising "winter" bees that have a slightly different metabolism and a higher fat content. This helps the "winter" bees survive the long winter. Fall is also the time that the hive's workers evict the drones.
Beekeeper Gerard sent in the following photo he took today. In the front several hives he noticed a pile of dead brood. Concerned he investigated. Everything inside the hive appeared normal except he noted workers were uncapping drone brood cells and then removing the partially developed brood. He assumes this is just part of the transition process and he was lucky to see it in process.