They did add some new monsters, but they also took a few away; ones that they determined were too similar to others. There's a pretty good description of the new product on their web site, including what's been added, what changed, and what got removed. Dr DM said: This is a Kobold Press decision. I get it; margins aren't great on these products. At least they added additional content (I hope). There are other options. Paizo will usually update its products for previous buyers. The amazing Venatus Maps just updated one of its Curse of Strahd map packs from about a decade ago!
