They announced that Halloween would be identical at the end of the last Living Story update. New content continues on 4 November.
Sorry, I stopped checking every update and comment from Anet when they proved again and again there isn't much worth my attention. I play when there are interesting things to do and when I started spending more time reading about the game than playing it I stopped reading about it. They started a precedent with Halloween the last couple years they couldn't keep up with and that is disappointing. I remember last year people were upset with the limited set of repeat content, I can only imagine now, although most probably don't even take the time to express their dissatisfaction any longer.