At the conference with the neighboring farmers, what new changes does Napoleon point out?
Never one for speeches, Napoleon points out some new changes at the end of the novel in quick fashion. The first would be that the animals will no longer refer to one another as "Comrade", something that he dismissed as not needed on the farm. The flag has been changed as well as the boar's skull in the front is now gone. Finally, the farm's name will go back to "Manor Farm."
On some levels, the changes are not really "changes" as they help to bring life on the farm to the same place it was under Jones. The only difference is that the pigs assume the role of leadership and not Jones. Additionally, the idea of a "revolution" is brought to a theoretical point of reckoning: The full rotation 360 degrees. In this, Napoleon's changes have brought the story and the political narrative of the farm full circle. The more things have changed, the more they have stayed the same. In this, I think that there is some level of thematic significance in that Orwell is trying to make a point about those in the position of power and how declaring independence and maintaining it end up becoming two separate realities.
In the last chapter of the novella, Napoleon invites the neighboring farmers to tour and inspect Animal Farm. During their conference that evening in the farmhouse, Napoleon says that his sole purpose is to live at peace and maintain normal business relationships with the neighboring farms. He then points out that the animals' "foolish custom" of addressing one another as "Comrade" has been suppressed. Napoleon also points out that the custom of marching past a boar's skull every Sunday morning is now forbidden, and he remarks that the skull has already been buried. Napoleon then mentions that the white hoof and horn flag, which had been previously flying over Animal Farm, has been replaced by a simple green flag. Most importantly, Napoleon has renamed the farm back to its original title, Manor Farm. The renaming of Animal Farm signifies the complete change back to the oppressive conditions under Mr. Jones's reign, illustrating how tyranny has spawned more tyranny.