I'm surprised that there's no DLC activity on SteamDB yet, so close to Easter.
All of the other Spring (Autumn for those of use here in the Southern Hemisphere) packs have released the week before Easter, so players could make use of their Easter break to play the game:
1) South America DLC released April 7 2020, Easter on April 12
2) South East Asia Animal Pack released March 30 2021, Easter on April 4
3) Wetlands Animal Pack released April 12 2022, Easter on April 17
4) Tropical DLC released April 4 2023, Easter on April 9
Following the pattern, the new pack should release March 26, with Easter on March 31. If SteamDB activity usually starts 4 weeks prior, that should have happened on 27th Feb, but the only files being worked on then were dev_release_trunk and dev_final_trunk (I was excited until someone here pointed out that those are not DLC related files).
We're watching for the quality assurance files to be updated - apparently 4-5 weeks before release. If they get updated this week, that would bring release to either 2nd or 9th of April.
Maybe you guys are right and the console release will stand alone, with DLC announced and released after Easter break. It would be a real shame if that was the case, because having the public holidays to play new DLC is always such a great time!