I’m also confused as to why people keep saying this is the last pack.
Because it very obviously is.
Normally they announce their intention to continue releasing PDLC for the next financial year as part of their financial report. Currently we are in FY24 (Financial Year 2024) which ends on the 31st of May. The last financial report only suggested we would be getting PDLC until the end of FY24, rather than telling us they would be continuing to release PDLC in FY25 (in previous reports, they always announced there would be new content coming in the following financial year).
Aside from that, things are occurring exactly as they did when
Planet Coaster wrapped up. A new game dropped (in our case the console edition) and layoffs have occurred (including PZ devs). Then, the icing on the cake, as predicted by anyone with any common sense, our last DLC contains more content than we're traditionally used to. Lo and behold, 7 animals and a scenery set. It couldn't be more clear that this is the last DLC. Frontier will never come out and say it (they never have for any of their games), but this is an almost exact mirror of
Planet Coaster.
At most we will get one or two small free upates to fix whatever bugs inevitably crop up with 1.17. Then it will be radio silence on PZ (except for maybe community challenges until they wind down the Franchise Mode servers or whatever).
Here's hoping for a sequel within the next decade. Preferably one that includes something like a petting zoo in the base game to get it out of the way early.