One more piece of evidence. Today’s word was the first time that the old server and the NYT server did not have the same target word. We found this because my partner and I have been doing it in competition with each other for months. Today, we realized for the first time, our target words were different, and my partner’s word just happened to be one of the words that BB reported was removed from the NYT version. We checked, and sure enough, she’s still connected to the old PowerLanguage server, while I’m on the NYT server.
ETA: Curiously, the two words are similar, in that we both had difficulty guessing for the same reason. But they were not the same word