Having catalogued a lot of locations of Pokemon around Wellington on the website, I’ve noticed that different Pokemon have been appearing in different locations, too! However, it started about a week before the update.
I wonder if they’ve done that to keep people interested by giving new Pokemon to those who don’t travel around much? I think the level of interest in Pokemon Go is definitely diminishing based on the number of visits to this site. Of course this could also be represented by me not marketing it as much or other Pokemon Go websites appearing. I might do a little research using Google Trends at some point if I can be bothered :p