They definitely wont do a New World scenery pack, because number 1 they've only ever combined 2 continents in an animal pack (when the theme is region based), there simply isn't enough room to cover 2 continents in one pack that names itself off of those continents. Secondly, it would be really hard to market scenery for a pack with 2 continents, especially considering both continents have scenery themes that are wanted (NA native scenery set, Carribean set) and doing a pack with 1-2 animals and a scenery set with 2-3 animals from the other continent would be really weird.
It always feels a little strange to me when they attempt to put a specific scenery set alongside a broad theme. They got away with it in the Tropical Pack simply because of how "generic" the majority of the building pieces were... But I still wince when I look at the custom "statue" pieces because the theming doesn't match hardly at all for the fossa or red river hog. And the forced stylistic approach to the European animals that happened.
Too, if people are assuming we'll have a stronger showing for South American animals that still doesn't necessarily justify a Caribbean building set (e.g., or it would lead to something weird like them choosing the Cozumel coati over one of the more common ones to force a fit).
Realistically, the NA scenery that people are wanting really should have been implemented instead of the Nordic set for the Arctic pack. But anyway...
Simply put, if the next pack has something to do with South America, I will imagine that it is either an Americas Animal Pack or a regular Latin America Scenery Pack if they go as normal. Maybe they do a LA animal pack as the finale but I really don't think so, its not a big idea for the finale.
The one case I can see for a Latin American pack for the finale is how many animals there are in the top 15 of the meta wishlist from that region. If I recall, at this point, nearly half the list is animals that reside in Central and/or South America. Which is pretty substantial and could give them decent bang for their buck in terms of popularity. But three of those are primates which folks tend to want to assume we'll only get one of per pack...
But it would still leave quite a few highly-requested, and viable, species on the table. So really hard to see how folks would react to that. Would the trade-off of all those South American species be worth it to exclude the secretary bird, tree kangaroo, musk ox, and whatever completely? Because for a lot of people I can see that pack being a bit alienating for very specific animals.
However. Thinking back to one of your theories from a while back about Frontier using these last few gaps to "fill-in" gaps? The Eurasia pack was a reasonable counterpart to the European pack, no? So maybe the LA animal pack (+ scenery) is the final piece to the puzzle. We already got a SA scenery pack... It would make sense, and fit a potential pattern.
(Okay, I've convinced myself that it's a tie between something generic and LA.)
Its also worth noting that JWE2 has potentially teased a Flying pack (twitter post that seemed suspicious). JWE2 has now done 3 (if this new one is infact a pterosaur pack) kinds of species (marine, predator, flying) which leaves prey, and considering the movie star Microceratus still isn't in the game, it can be assumed that if the next JWE2 pack is flying pack, we can expect after that we get Microceratus in a prey pack (if they included tarbo from Camp Cretaceous I'm sure they are going to include a missing movie species). That would mean JWE2 gets 2 more packs. Keeping in mind that JWE2 also got the same treatment as PZ as in the financial report it said PDLC for PZ and JWE2 in FY24, since JWE2 can get one more in the summer, maybe we get one more too? All just crazy speculation lol.
I have no idea what any of this means except for the tweet which... Is pretty specific haha. But they already have 11 flying species in the game so it could just be a lazy crowd engagement moment, TBH.
But this is definitely something to keep an eye on. I'm still not sure why they wouldn't say there's more DLC coming for either of those in FY25, even generally without naming the games... There's no real logical reason as to why they'd do it. And they've done it in every other financial presentation prior (and I'd argue it's more critical for this one given the status of things).